Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c35c8dd3a577884…

MALICIOUS

PDF

50.7 KB Created: 2020-08-15 04:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fad0dd2ffa44458dd2a5ae7e3403e8f3 SHA-1: 46387682aedf8e2fc139a8290d8b5094c755525e SHA-256: 0c35c8dd3a57788480e1eb2c8b3e8401c911f2293154dd78fcbecac0e68eeb3a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a known malicious redirector infrastructure. The document body text appears to be obfuscated or corrupted, but the presence of numerous links suggests an attempt to direct users to malicious sites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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.
  • 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.
  • 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.ru/pify?keyword=me+tera+amplifier+song++pagalworld In PDF document text
    • http://dalaza.robertlaskey.com/uploads/1/3/1/4/131408567/1003365.pdfIn PDF document text
    • http://kuxaguwo.shamrockbusinesscentre.com/uploads/1/3/1/6/131636719/watulalujawo.pdfIn PDF document text
    • http://files.ashleykdrew.com/uploads/1/3/1/4/131437515/xekatemab.pdfIn PDF document text
    • http://xewoviniv.nolafootdoctor.com/uploads/1/3/0/9/130969360/ab542.pdfIn PDF document text
    • http://nijomixim.mscameron.org/uploads/1/3/1/4/131407406/gojun_vusikiguxusom_kekuvozukus_lulijutatagib.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/1/0431/8570/1019/files/salamanders_codex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/10228778109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/lirarume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4172/2261/files/33958918469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/55332889239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/77814896516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/kanep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/alfa_laval_separator_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/kaufland_letk_ostrava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1305/4357/files/kodovuvopogoxute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9585/8083/files/33494014450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1555/1651/files/xorobipeteruf.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D45 5460 bytes
SHA-256: 1809a5939304a7cfb3b08c9efb2f33a5138dedb6f41fccbb8e6832b69f8e53d4
font_01_sfnt_off00006fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCC 2140 bytes
SHA-256: a1c68180eae955d710b1f59d89b7b5bb1f22246194deffa7b9c3298859733f9b
font_02_sfnt_off000079a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A4 10484 bytes
SHA-256: c16ac2a06547d043a3a9beff23c957f9a50b0c5b82000e37d5cf32d9dbd02882
font_03_sfnt_off00009dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC6 18776 bytes
SHA-256: 001d00114279cda904ec87ee5caf81ece5266ef333c342f0ca5ce216f4908131