Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71d70708b160bc0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-18 15:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76455b2a331a37f24a6c4a8ffaade2cf SHA-1: b41715405a87b9b2f9adcdd60f69251752cb0771 SHA-256: e71d70708b160bc08f0b74b3a312a8b714375d15f52388130d7e5190708f32ba
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. One primary URL, 'https://ttraff.ru/pify?keyword=formwork+design+guide', is flagged as malicious. Additionally, the file exhibits characteristics of a PDF link farm, with many links pointing to Shopify-hosted PDFs, some of which are confirmed benign, but others are unknown. The document body itself is heavily obfuscated and contains the malicious URL, suggesting a lure to external content.

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=formwork+design+guide In PDF document text
    • http://files.ashlightfoot.com/uploads/1/3/1/3/131382141/sadogokulikaset.pdfIn PDF document text
    • http://moner.ciasulli.com/uploads/1/3/1/3/131384618/tasitalivedig-tususazox-neviwen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/check_cpu_temp_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/bukadufesuxubapusutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/bsc_english_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/anti_slip_grp_flooring_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/basic_commands_in_linux_with_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/ponulate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/ribbon_embroidery_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5755/2277/files/souled_out_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/bipartisan_campaign_reform_act_2002.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCE 4816 bytes
SHA-256: 21344a7b61b3500195d8aa3f67b58947ade779371a097b1944d8f5dedb1980fd
font_01_sfnt_off00006023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 10468 bytes
SHA-256: c4c8d2566b5bd45eab4c7deac4b5010601c2184bb3c7abe3c5fb2b5a0afb6a28
font_02_sfnt_off000083e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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