Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f81ccbe2566953…

MALICIOUS

PDF

44.7 KB Created: 2020-08-02 07:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d9c2dfb624a602c5351c4257ceab40d SHA-1: d67f8c41786d876c39edb42f370a7b9bcda8299a SHA-256: b2f81ccbe256695332b199503c47c7d0f728533658aac447473ac94928ac7f0d
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a social engineering tactic to drive traffic to malicious infrastructure, likely for further exploitation or phishing. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of direct payload delivery.

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=engineering+electromagnetics+inan+pdf In PDF document text
    • http://files.magiqatlas.com/uploads/1/3/0/8/130814513/zivatemurijupizowigi.pdfIn PDF document text
    • http://files.chrisfluck.net/uploads/1/3/0/7/130738621/fosep.pdfIn PDF document text
    • http://files.allaypdx.com/uploads/1/3/0/8/130813696/kunav.pdfIn PDF document text
    • https://digitalcontentmarket.org/wp-content/upIn 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/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/25996139795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/jimilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4896/8100/files/javascript_object_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/15367526412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/siwixirik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2846/2240/files/zixeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/12983103560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/14389632463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/56511183527.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_off00006507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6507 5432 bytes
SHA-256: d4abbbc5e6176c33c4e2a4649a44e69025e4e56176ff290122ae91c1ae43093f
font_01_sfnt_off00007771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7771 15132 bytes
SHA-256: 0e78e71ea2fd234def01797a229a78b89ed8ddd83da684f35f9ce8df8d8ab87c

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