Malicious PDF — malware analysis report

Static analysis result for SHA-256 1faefab077de5fbd…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 08:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27904e613e257922a173059c6355b77f SHA-1: d70f07d6b2d91ac5e572bd41d4ec1eaf9def5959 SHA-256: 1faefab077de5fbd3faef946d2021dc9df6a48fc4797e5f16e80a49c4b4179c3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=lo+ultimo+en+tecnologia+informatica+2018'. The document body also contains this URL and numerous other links, many hosted on Shopify, which is flagged as a link farm. The ML classifier strongly indicates maliciousness. The primary attack pattern is likely to lure users to a malicious site via the redirector.

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=lo+ultimo+en+tecnologia+informatica+2018 In PDF document text
    • http://files.waterworks.nu/uploads/1/3/0/9/130969748/tuvimusasul.pdfIn PDF document text
    • http://files.verandaboutique.net/uploads/1/3/0/7/130740609/jigujetokosejutunu.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/1/0438/0524/5597/files/bratstvo_crnog_bodea_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/46308067907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/53571698948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1871/files/speaking_exercises_for_english_learners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/xujiromari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5290/9212/files/we_livetogether_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/zosalovozuwaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1380/5992/files/capsa_susun_free_poker_casino_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/wav_to_midi_converters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/puvigivofuritu.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_off00006f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F34 5484 bytes
SHA-256: 466c93f4b3419e58b94842b2c817f507b393a49fac35b85cb02ed668ea033f60
font_01_sfnt_off000081c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C9 11508 bytes
SHA-256: 95017aefde6183fb203deba90e24583b631cb6a5cad434b9a7886a72bd6baf19

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