Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25511b77b743994…

MALICIOUS

PDF

39.6 KB Created: 2020-07-31 19:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43defa563149a0962d13db1f950e16e6 SHA-1: 711da301f53523b6c70ae1fecad2a38a9484b565 SHA-256: b25511b77b743994d25acd139a1375bc14aca38cfd229544b31375c9d7530afd
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a malicious redirector link to 'ttraff.ru', which is likely used to obscure the final malicious destination. The document body, though partially corrupted, contains text related to an 'awning installation manual', suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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/wb?keyword=outsunny%20awning%20installation%20manual In PDF document text
    • http://files.nexusopx.com/uploads/1/3/0/8/130814393/e103fba2965.pdfIn PDF document text
    • http://files.thepuzzleleaguedance.com/uploads/1/3/0/7/130740211/fuwovopojup.pdfIn PDF document text
    • http://files.sig10-cleaning-decontamination.net/uploads/1/3/1/6/131606092/xebonitibivawo_kubaxefupat.pdfIn PDF document text
    • http://files.bickleyandcompany.com/uploads/1/3/1/3/131383325/8548219.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/1/0431/5214/6587/files/49015120018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/88042169729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4737/9356/files/nolelikipokapilupujaduniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6237/7113/files/banazuwixik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6756/3420/files/fisubadusuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/wuxufir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/22972179758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/jesupodinugexemegebap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/60383468977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/wafizexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/77586632344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/pidigagex.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 3

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_off00005cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC5 5128 bytes
SHA-256: 4c8f5752c4e54355abb4e8c0f58bf69ddffbb731c55a9546aec9ea1836c105e4
font_01_sfnt_off00006e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E43 10320 bytes
SHA-256: 6f45462f658fbb0c8883674baafd4f95a6d7e3cf0782c50fcdf6070e8814c662

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