Malicious PDF — malware analysis report

Static analysis result for SHA-256 852db6ff7adcdcb0…

MALICIOUS

PDF

47.4 KB Created: 2020-08-10 19:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d65d077bf0f2a5bdfd869cbfe254d167 SHA-1: 00aabddf66b53e15a21c6e6d1647f03c633f18c8 SHA-256: 852db6ff7adcdcb00b58c96ea0fc0287b1aad037fe3f237e3dfe21082a6cb394
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a malicious SEO link farm, specifically `https://ttraff.com/pify?keyword=antiemetics+drugs+pdf`. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=antiemetics+drugs+pdf In PDF document text
    • http://kevalexiw.fijianmermaid.com/uploads/1/3/1/0/131070450/wutefimomunul.pdfIn PDF document text
    • http://sugukobuj.centralindianaiscebs.org/uploads/1/3/1/1/131163599/fixare_pasimikosis_luviz_vapajudivuk.pdfIn PDF document text
    • http://dasapidun.thedillybag.net/uploads/1/3/2/8/132816202/3f4e5.pdfIn PDF document text
    • http://files.ddawork.com/uploads/1/3/2/6/132682989/nutirotix.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/1/0432/4874/6651/files/sofumowexozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/89575852101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0606/4801/files/97349615470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/49117384003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/19486561968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3085/1233/files/calendrier_retransmission_coupe_du_monde_rugby_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/68449013569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/subetaseropalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5089/files/82420224026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/9947217918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/tf_2_jump_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/79016284009.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 2

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_off00007526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7526 5224 bytes
SHA-256: ec37d34b2b1897aa27e347506c25ed6924cdd0dcf64b4d4d2b327788873e3fb4
font_01_sfnt_off000086d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D1 13152 bytes
SHA-256: 41e908ba00267b2556777200860849d85cec2c24062ccd4a0d031cdba42c82b0

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