Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55a63118c2a572b…

MALICIOUS

PDF

50.5 KB Created: 2020-09-01 15:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 445d9dc422394e37095eef49f46a28f9 SHA-1: 4ebaa361663353a5aabc8d83e567eb79a3112720 SHA-256: e55a63118c2a572b269bb171667085235382a5ae096c7f2c36fc18991bf9abed
162 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/wix?keyword=whatsapp+stickers++free+ios', suggesting a lure to a malicious site. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/wix?keyword=whatsapp+stickers++free+ios In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_dd5307d50f8c420bb8eef6f98dc113ef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d4b78f0c91ff4000a4e5cf4d52f44875.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/efb3f0_84e4829aa58046f29a9fdab3b6ed66a0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cfa91a_c8440fc079224588bb1604726d0855c7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6372/files/kC3BCfC3BCrlC3BC_telefon_C59FakasC4B1_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/2994997754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1581/3795/files/31012110106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/chemistry_jamb_past_questions_and_answers_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/anderson_public_policy_making_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/attractive_man_conversation_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/osmosis_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3638/4159/files/64822201768.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
    • 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 3

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6497 5148 bytes
SHA-256: 8d3f4f54fae7715de8ea0bc781c1a174e34bb58835c09a7c572a2820d1b343bc
font_01_sfnt_off00007625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7625 10384 bytes
SHA-256: 5f505ddb1e21cc22cb367b35b870bdb86131ba9556f7f0fadcb3371511015c23
font_02_sfnt_off000099cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99CF 16428 bytes
SHA-256: 04f7f01f0e81293101bff3dd2fde270aec15dc769f0ca1dde224ef3aeb45275a
font_03_sfnt_off0000afe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE9 3204 bytes
SHA-256: a2d2a73b31f614169c909b1bb91d4aa96e97aaa5bd1dbabfed78e01997b6b1f8

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