Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e4ba7151f30da6…

MALICIOUS

PDF

60.4 KB Created: 2020-08-09 11:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 097462c1745a405e85f450fc9885a6db SHA-1: 5cc2496756700bef85a126e565115f209ad921fc SHA-256: 63e4ba7151f30da6df65bb83b6db2b212dba2ac0c470ed1e5536be0c6fb245c6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service. The primary lure appears to be a 'stereo amplifier circuit diagram', which, when clicked, redirects to 'https://ttraff.cc/pify?keyword=stereo+amplifier+circuit+diagram+pdf'. This suggests a phishing or scam campaign aiming to redirect users to malicious content. 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.cc/pify?keyword=stereo+amplifier+circuit+diagram+pdf In PDF document text
    • http://files.msbui.com/uploads/1/3/1/3/131381542/da4878b5.pdfIn PDF document text
    • http://files.orchardhillsbangor.com/uploads/1/3/1/3/131383657/rulixigiliwogijiv.pdfIn PDF document text
    • http://tabujume.homeinspectoralbuquerque.com/uploads/1/3/1/4/131453494/8239776.pdfIn PDF document text
    • http://files.portisaacpottery.co.uk/uploads/1/3/2/6/132682829/599717.pdfIn PDF document text
    • http://files.blackwinglabradors.com/uploads/1/3/0/8/130874612/mazivuk.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/1/0428/9835/8432/files/mosagewenusuwaguxizekud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/1189935796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/30839864056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/31949930912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/zirojuzibiwofunuxazawed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54903558396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/bodukeruriruxanalegepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/bufuzowur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7599/files/54748988968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/best_to_word_converter_ocr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7967/9656/files/kejadaxilijedirad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2306/4488/files/chuyn_i_t_file_nh_sang_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/48840458245.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 7

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_off0000b02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB02A 5400 bytes
SHA-256: 93ac25b448266babe45f75e2370bea2cf67e83782045fb1169867cbcadff5762
font_01_sfnt_off0000c271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC271 9980 bytes
SHA-256: 4d8910e8251b964d0f47785badfbf3b6f50bfae1827cb74d81df0f3c726c5731

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