Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c09c8c68731595…

MALICIOUS

PDF

40.3 KB Created: 2020-08-24 23:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a25a39247bad19519a57f25e509824f6 SHA-1: b804cd70d2c3bb272f3154a1acbcd625d1e379ae SHA-256: 16c09c8c68731595d62fcc0100b978ba5c00464dc26738d24ed8dedc6866e77c
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector pointing to 'https://ttraff.ru/pify?keyword=android+app+for+windows', which is identified as malicious. This suggests a phishing or scam attempt to trick users into downloading files. The document body, though heavily obfuscated, contains references to the lure and multiple Shopify URLs, some of which are confirmed benign, but the primary redirector is flagged as malicious.

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=android+app+for+windows In PDF document text
    • http://files.teambirths.com/uploads/1/3/0/7/130775002/tazabir.pdfIn PDF document text
    • http://jikoxeg.hishandsreader.org/uploads/1/3/1/6/131606420/goxiketanoxo-feputopijil-domul.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/1/0432/0709/8529/files/android_bitmap_set_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/accounting_and_finance_an_introduction_8th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/87933395942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/xebonaxujuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/37160647150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/20799370199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6875/8943/files/logukozateno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4270/8378/files/loan_format_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/queen_gambit_declined_sadler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4060/4313/files/wuretisamizibobig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2480/8096/files/wuwijizunudekekarekabawut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0743/3125/files/gufemevuxilugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/44190670049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/jotilesadigeviwowe.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
🗂 Part of campaign: teambirths.com 4 samples

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_off00006021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6021 5084 bytes
SHA-256: 45c7d8ee2cb5bf27f629f0d7d69db39d612c5cfdfd0dc1b5223ae7e5bcdafa16
font_01_sfnt_off0000718b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 10236 bytes
SHA-256: a40b30457b41df1ce34e255e7808693ef0323e533c849bdc6c749f986d8121b3

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