Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b67a1726e12d30…

MALICIOUS

PDF

51.2 KB Created: 2020-08-09 04:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 713cb107bf9b81676a450c9f7731d910 SHA-1: 7ace44869bced0d1a987014c6dadded0004bc4a4 SHA-256: 79b67a1726e12d3087ccd5925f731aaa3421f820ca8e2f4246a959737b776fc4
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with link farms and redirectors. The primary malicious link, 'https://ttraff.cc/pify?keyword=applying+to+college+checklist+pdf', is identified as a malicious redirector. This suggests the document is designed to trick users into clicking through to potentially harmful content, likely a phishing or scam page.

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.cc/pify?keyword=applying+to+college+checklist+pdf In PDF document text
    • http://files.dori-shasha.com/uploads/1/3/0/7/130776042/lumipopexuxod_zakedawesinezum.pdfIn PDF document text
    • http://mojoti.takaikari.com/uploads/1/3/1/8/131871390/01285.pdfIn PDF document text
    • http://files.ibizarentaudio.com/uploads/1/3/1/3/131380000/4796740.pdfIn PDF document text
    • http://files.decadesboutique.com/uploads/1/3/1/3/131380741/fuxolekaxaz-pamitakuwapa-numelenipisoxu.pdfIn PDF document text
    • http://files.sparkybuddy.com/uploads/1/3/1/3/131380213/fevajozudibof_gopefed_natanem_fubixu.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/1/0438/6127/8870/files/43897794498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/lajabovafegifimegatazoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/sonabijiluziganob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/nipupixinusupokebovopaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/30875983448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1436/4059/files/dodugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6439/1845/files/barash_anesthesia_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/zebuxewew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6549/1106/files/maponunujat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0082/9848/files/delphi_forum_cbp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/zagazikusozonoduvegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/super_smash_flash_2_demo_v0._9b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6B 5056 bytes
SHA-256: 052f26d69a4fc9cc21221a9ade71a54afc5197ac325710c7614918e49ceaa97b
font_01_sfnt_off00008ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 10300 bytes
SHA-256: a9dfb9892b572aa60647e7ad1b86e4de4fd12a1ccb020c4519f4445af78e69ea
font_02_sfnt_off0000b1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1E2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3