Malicious PDF — malware analysis report

Static analysis result for SHA-256 a556f547c8c1ceb1…

MALICIOUS

PDF

53.0 KB Created: 2020-08-11 04:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b6633181a94edffd858306b105fd560 SHA-1: f208e147824ae28a394088b5323e3965e92ddada SHA-256: a556f547c8c1ceb1e83922f90489b2c14267ed85093480945105b2f3d88f9531
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a heuristic indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting a lure for downloading manga, and the embedded URLs reinforce this. The primary malicious URL is a redirector that likely leads to further malicious content. The presence of a 'password archive lure' heuristic suggests this PDF may be part of a multi-stage attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=descargar+manga+berserk+pdf+gratis In PDF document text
    • http://files.performingmonkies.com/uploads/1/3/0/7/130738850/0b388adab109a.pdfIn PDF document text
    • http://files.myportlandtherapist.com/uploads/1/3/2/8/132814589/416289.pdfIn PDF document text
    • http://files.nordiclilly.com/uploads/1/3/1/4/131407388/9d0659eb15b.pdfIn PDF document text
    • http://files.worldsandgames.org/uploads/1/3/0/7/130775704/3938397.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/ledolupepunen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/42798206903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/common_git_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/1256563601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6841/5400/files/articulation_and_phonology_in_speech_sound_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0455/1590/files/dajefaxomivavurogotaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5293/1995/files/jalemuvazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/93058216862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/designing_agentive_technology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/bopujekurad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/kodimulinodutofin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/66585717857.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off00006fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEE 5644 bytes
SHA-256: 783cc53b9a7637cabb0c692335195ac86d2ed81b0336d87bb12cf92182a67c67
font_02_sfnt_off000082fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FA 2504 bytes
SHA-256: 398cd08b556dd1159d5182ff1a49151a61947ffa4c733fafb821e6ee0fe9f60f
font_03_sfnt_off00008dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFD 10160 bytes
SHA-256: 08c2333584ee1f54a8e86e3da2b986507afc29241651fb94bd9cf7cbb4fdea96
font_04_sfnt_off0000b103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB103 16076 bytes
SHA-256: 12198ed304d8e74df64bcaa8a4aae6da6436d73ceeb6d758e01031f89a18fcfe

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