Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86ba3dc87e0f34c…

MALICIOUS

PDF

45.7 KB Created: 2020-08-04 01:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 492bd2519abe7ca368cb00c010d28c8a SHA-1: f96346192b9a6f684250d76536432fe7a3ce717f SHA-256: a86ba3dc87e0f34c4dbde479120dcb91649326968aa86a30264a3f98549c821a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a title suggesting an academic paper, likely a lure for SEO poisoning or phishing. The presence of numerous links and the redirector indicate an attempt to drive traffic to malicious infrastructure.

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=barabasi+albert+laszlo+a+kepler+pdf In PDF document text
    • http://files.trojerestaurant.com/uploads/1/3/0/7/130775145/vekevelis_lavinebosi.pdfIn PDF document text
    • http://files.robbiehamblin.com/uploads/1/3/1/4/131454034/fumugemamevonaxafep.pdfIn PDF document text
    • http://files.planthealthcare-mortonarb.org/uploads/1/3/1/3/131383342/jowegobuk-xujeligulelogam-fifexivimi-zapizak.pdfIn PDF document text
    • http://files.ellingwoodsoap.com/uploads/1/3/2/6/132696060/3776915.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/1/0437/9112/2584/files/bajupawakimozojosesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/bagesaxorofixewasoges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/burewarunexesuzuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/xagerevuzenurukova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/r_sort_dataframe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/world_builder_s_guidebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9124/6747/files/93507554893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/ganovenigelesexonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/juwojejarakaxafiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6290/files/75825236868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/mevumebuduratabilolowok.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7392 5340 bytes
SHA-256: 8c138285674fa84e666b122c91e9a46d26428017fd61e55476195b37245c83e1
font_01_sfnt_off000085cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CC 10024 bytes
SHA-256: 42b99d8ac45a8590b2774c9260d7042f9f5d78261fb08518bd19b0376f215bbe

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