Malicious PDF — malware analysis report

Static analysis result for SHA-256 16dac61e1303ce62…

MALICIOUS

PDF

52.7 KB Created: 2020-08-23 08:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c74293324caf01116b176e767a73d724 SHA-1: 2f61a557221b8ec971638af36ddbd8ac2b11ae92 SHA-256: 16dac61e1303ce6238b48c6c4ae8b6f7d341417cba7c66c063754af0ece8609a
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed to appear as legitimate content. The primary malicious URL, https://ttraff.ru/pify?keyword=consumer+reports+washer+dryer+combo, is used in conjunction with a lure related to consumer reports, suggesting a phishing or scam attempt. Although no scripts were extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful infrastructure.

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=consumer+reports+washer+dryer+combo In PDF document text
    • http://files.habitatgpmc.org/uploads/1/3/0/9/130969710/0bb9ab66.pdfIn PDF document text
    • http://files.solarconsumeradvisor.com/uploads/1/3/0/9/130968933/8040831.pdfIn PDF document text
    • http://files.bow4290.org/uploads/1/3/0/7/130775567/kevasobupulofupu.pdfIn PDF document text
    • http://kudas.miraclecreations.shop/uploads/1/3/0/9/130969742/3991400.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/1/0429/5580/0739/files/nosokurowokoluzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/bbg_training_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4786/1923/files/xafififosupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7469/6856/files/auto_id_card_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3690/1527/files/nojitif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3331/9831/files/63463616377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/breakthrough_thinking_thomas_vogel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/telugu_bible_concordance_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7224/9251/files/emotional_intelligence_test_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/fudewopabufav.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 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_off00009055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9055 5520 bytes
SHA-256: fe6774ae067499407a66a0f5751e6f78514394dd2f70b624f6ad9a854203d6fb
font_01_sfnt_off0000a2f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F6 10112 bytes
SHA-256: e501774a8b9acde3a7463828c6aa905ab090567c4abdd634178e3f6e0d36e142

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