Malicious PDF — malware analysis report

Static analysis result for SHA-256 711c99318f12e91c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-08 09:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e2ea17de6041ddee241cc7b5a67a237 SHA-1: 973f7be6543ba14bc86a9140579d5e751e3b4609 SHA-256: 711c99318f12e91c02ed38fe53ff8d3e9a3d4b7281a0aacf9a8906d446139386
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector URL (https://ttraff.ru/pify?keyword=brickmania+instructions+pdf). This suggests a link farm or phishing campaign designed to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the structure and embedded URLs point to a social engineering attack.

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=brickmania+instructions+pdf In PDF document text
    • http://files.thepeckperspective.com/uploads/1/3/1/4/131454816/dijituninin_vodatavenani_gevodu_pinijox.pdfIn PDF document text
    • http://files.atallamdshop.com/uploads/1/3/0/9/130969497/lubujozi.pdfIn PDF document text
    • http://files.trendyjewelsbymanish.shop/uploads/1/3/1/3/131398547/2905080.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/1/0433/0687/7080/files/fisebupujavilugux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9333/4947/files/a_global_reference_for_human_genetic_variation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/xogekomuvenijamusifuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/bamoradasatosugol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/difasadoxaneromasuvakuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/swedenborg_ita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/zudujirajamekupipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9856/1957/files/saurashtra_university_b._com_sem_1_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/razufurukirarapok.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 6

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_off00005c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C85 5144 bytes
SHA-256: e5388c7f5d8ae73eb22d81c7c4aeac46cfa7dd392799db16b68edb8bd60ce7a7
font_01_sfnt_off00006de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE1 10528 bytes
SHA-256: 3bfd80f03291090261371985687bd9ecc60db0eb7f6c7e60368d7f7268a1d1f8
font_02_sfnt_off000091ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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