Malicious PDF — malware analysis report

Static analysis result for SHA-256 c403ae0fe50776cf…

MALICIOUS

PDF

36.4 KB Created: 2020-08-21 11:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 473358595338dc189b3362fe5dad9edc SHA-1: 14be92235b18939e99eccf8aedfdcf0689e483ce SHA-256: c403ae0fe50776cf7f22ff545a388af385c49ca413257fa447baaba1dc57d141
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, a technique often used to obscure malicious destinations or to create SEO link farms. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=lagu+cinta+karena+cinta+aviwkila'. While many other links point to benign Shopify URLs, the presence of the malicious redirector and the sheer volume of links suggest a malicious intent to distribute or obscure the final payload. No scripts were extracted from this sample.

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=lagu+cinta+karena+cinta+aviwkila In PDF document text
    • http://tagixa.svhomecenter.com/uploads/1/3/2/7/132740930/5963249.pdfIn PDF document text
    • http://bizegu.thewellnesschik.com/uploads/1/3/2/7/132740270/c9509871b915e.pdfIn PDF document text
    • http://files.wilesmenschla.com/uploads/1/3/1/4/131453136/4a31e986c.pdfIn PDF document text
    • http://files.mariaapostolopoulou.com/uploads/1/3/0/7/130775918/5119209.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/1/0430/3123/2661/files/p90x3_lean_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0372/2398/files/kashi_amarnath_bhojpuri_full_movie_720p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/android_open_folder_programmatically.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9057/0405/files/toro_wheelhorse_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/takuduvala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/gimezafananulole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6657/9354/files/past_simple_regular_verbs_exercises_primary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/lapemawusejewezib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6271/2728/files/47134818617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8086/6197/files/arcsight_esm_6._11_admin_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/5810220803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/5504966499.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 5

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_off0000495d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x495D 4948 bytes
SHA-256: dd5caea6242bf12c9e3f78f0f0fbdd338ceb29e451588e544e7c752d9b2928b9
font_01_sfnt_off00005a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5C 13496 bytes
SHA-256: 5a98936cd4b2fef0594def2aeddc1270f6632e70e7768c0c0e6cd85952ef0372

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