Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5dd345eaded2b2…

MALICIOUS

PDF

35.0 KB Created: 2020-08-19 21:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6517362f15cf1f6ef288d389914af08 SHA-1: 9aac9799dd157ef924a2dcc581730a681f82bdfa SHA-256: be5dd345eaded2b2351a2185fa719aa7102a4eb2e728d264ac97705369b7e450
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm strategy to obscure the ultimate malicious destination. The document body, though heavily obfuscated, also contains the malicious URL, reinforcing the attack pattern. The ML classifier strongly supports the malicious verdict.

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=carnivores+dinosaur+hunter+android+apk In PDF document text
    • http://files.thegreedycouple.com/uploads/1/3/1/3/131379894/kamuxajima.pdfIn PDF document text
    • http://files.caperecovery.co.uk/uploads/1/3/0/7/130739704/pusako.pdfIn PDF document text
    • http://vopib.doryclub.org/uploads/1/3/1/3/131383483/cce6de63c1b1.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/1/0437/7644/2519/files/14091836763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/singular_and_plural_nouns_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/botumikat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/toxazipuwuvabumupegajunaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9119/0175/files/rolotamojotunebebebaluxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/cognitive_ability_test_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4350/7615/files/simple_online_store_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/91522721666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/72832410720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/baby_crib_sheets_target.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_off00004d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D9C 5044 bytes
SHA-256: 875d3cd07a87913710ab51f2b92e2b3e00ddaae40bb3323cd7fb1ed9a172a9e6
font_01_sfnt_off00005ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 9572 bytes
SHA-256: a87492e1ec405cfc5610ef3ff95bd71e4367b813699136f38aa48325be1dca78

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