Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f57a456a6859080…

MALICIOUS

PDF

41.8 KB Created: 2020-08-18 16:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee5921e21c0390c92e661c392e416c34 SHA-1: 9324f28de7fcd934bd45f0425a556f1c56510b87 SHA-256: 0f57a456a685908060b50715b168eec4a73134dd95c98da52148fdc2fbaaa36e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector URL identified as malicious. The heuristic firings indicate this is a malicious redirector and part of a link farm, likely intended to lure users to malicious content or phishing sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interaction via embedded links, aligning with spearphishing attachment tactics.

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=rindu+berat+camelia+malik In PDF document text
    • http://files.wallacecarpentryinc.com/uploads/1/3/2/3/132303077/a11ff8d16f3c3.pdfIn PDF document text
    • http://wuluvof.tuscanhenmarket.com/uploads/1/3/1/3/131380600/7da8dc554b7fc9e.pdfIn PDF document text
    • http://files.project907.com/uploads/1/3/1/4/131453365/zupubebumi.pdfIn PDF document text
    • http://files.bcarrollconsulting.com/uploads/1/3/0/7/130739340/sonuletewut.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/1/0435/0876/0742/files/mimesis_auerbach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/kabusemuzopubajovikixude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/mudubuxomuvakojizax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2539/8946/files/school_calendar_2020_17_deped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gokibaleginasesomedusuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/mipewerunesuwon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/73389577482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/zeneji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9930/6650/files/ayurveda_books_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/99827680897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/dukajodalamonewinimuviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/xopow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/46419344500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/waverod.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6323 5120 bytes
SHA-256: 73a6cee3bdbee20938170cab628b165e26d803c499e8d790a013f126e6b5724e
font_01_sfnt_off00007465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7465 11356 bytes
SHA-256: 8c05ef2bec3dec126ec71129ad2290e495ab678810f1d1938e92abb0b3104748