Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b4e85202f29661…

MALICIOUS

PDF

36.0 KB Created: 2020-08-02 05:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06cefd1ae1c2a55b54835dd3b6a64f0e SHA-1: 6f07ffb3daf328ff8537a2086ac012a17d79b518 SHA-256: 79b4e85202f296612fe69f205c27dad136303cf3bbd5fe63f00e9ffd77df1508
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to create an SEO link farm, masquerading as a document about "Theory of vibration with applications". The primary link redirects through a malicious infrastructure at `ttraff.cc`, which is a known redirector for phishing and malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure itself is geared towards driving traffic to potentially harmful 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.cc/pify?keyword=theory+of+vibration+with+applications+thomson+pdf In PDF document text
    • http://files.lakepointetower.com/uploads/1/3/0/8/130874647/togefi-tawisidobe-wifijipiduz-pedaburuluzad.pdfIn PDF document text
    • http://files.026futbolclub.com/uploads/1/3/1/3/131398452/vijukixomoti_pelajizemosoda_webof.pdfIn PDF document text
    • http://files.eileenkgoodman.com/uploads/1/3/2/8/132815791/8634120.pdfIn PDF document text
    • http://files.lavangfoods.com/uploads/1/3/2/8/132814589/c3997cb.pdfIn PDF document text
    • http://files.ineedlawnservice.com/uploads/1/3/1/6/131606248/liboziselamubanur.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/1/0440/4235/4853/files/61781723323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/tumewubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7335/files/61489247018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/sojudofukezutel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0307/4971/files/pekumaxonasapofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/vedevugekegiresa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/webmail_uth_tmc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/4367687039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/jovuzelokabefoputazux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/winanilewirizolakotudiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/xenitafofilabelane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/aint_worried_bout_nothin_lyrics.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_off00004d80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D80 5740 bytes
SHA-256: 0b3ba54c81f2952983d491717269c41afbf717ce55993fb8159953b14bdb77a2
font_01_sfnt_off000060f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 9992 bytes
SHA-256: 4627e39a01bb7df0c8bf8609a76ebf0ceed69b46a25ce31d5cab02dc60df0482