Malicious PDF — malware analysis report

Static analysis result for SHA-256 265d8776c4696df1…

MALICIOUS

PDF

49.5 KB Created: 2020-08-07 00:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f41557d33c687cdd00b558bfff76bdc SHA-1: 73bd5668744ad0bc4e35ccb78c070acb9a2430dd SHA-256: 265d8776c4696df10e590a565c5ba3e02ecf4d63f872d0ec782cb9c14b33d817
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body text, though partially corrupted, contains a phrase related to 'books on essay writing free download pdf' and a URL that appears to be part of a link farm designed to attract traffic. This suggests a social engineering lure to drive users to malicious sites.

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=books+on+essay+writing+free+download+pdf In PDF document text
    • http://files.offthebeatentreks.org/uploads/1/3/1/6/131606016/4123422.pdfIn PDF document text
    • http://files.color4home.com/uploads/1/3/2/6/132683334/pivujizije.pdfIn PDF document text
    • http://files.richellewilliams.com/uploads/1/3/2/7/132710627/dikodavinipapep-pekatito.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/6675558165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4541/2245/files/renew_texas_drivers_license_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/tozizerazogadawazisesevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/caballo_viejo_partitura_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/zevosisazuronusesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/volume_of_parallelepiped_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2598/9785/files/aaa_style_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/duvulewisok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/caring_for_your_baby_and_young_child_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/16226198357.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7553 5304 bytes
SHA-256: c328518c0bd5eceeccd8626d59b3df9e26adf8ddc6b8e3090904cd869ac2f536
font_01_sfnt_off00008786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8786 10420 bytes
SHA-256: 6cec2fca121ebaed5e5db65d903b70f752f23147056e9280975fa29f8ac52928
font_02_sfnt_off0000aae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.