Malicious PDF — malware analysis report

Static analysis result for SHA-256 16989e6f9529170f…

MALICIOUS

PDF

45.0 KB Created: 2020-08-06 22:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8258f65117abca79c9d652860d789b2d SHA-1: a95d5aa74a3a4a32ca900fcda8ee54972b924070 SHA-256: 16989e6f9529170fcb38a2c692b567e882c3880ec3497a0067b022e716e93a97
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to an SEO redirector infrastructure, including the primary malicious URL https://ttraff.cc/wb?keyword=historia%20de%20la%20drogadiccion%20pdf. This indicates a phishing or scam attempt disguised as a document download. The ML classifier also strongly flagged this PDF 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.cc/wb?keyword=historia%20de%20la%20drogadiccion%20pdf In PDF document text
    • http://files.maternalinstinctsdoula.net/uploads/1/3/0/7/130739971/kowiwe-tuwutaniwu-buxiledaxup-mijenevubuwiv.pdfIn PDF document text
    • http://kekug.alderbowman.com/uploads/1/3/1/4/131454106/lafozu_batexagutew_rimekik_zulopim.pdfIn PDF document text
    • http://files.seenbyc.com/uploads/1/3/0/7/130775520/8c711.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/1/0433/7270/7990/files/venaxuremiwijubut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1044/files/52556651712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7234/6526/files/9589215166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/lugibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9093/5969/files/banuwaveru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/tikosoziguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/10425416259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1063/7475/files/49169230446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/womazerozolevovisomopofev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1783/files/bubudanajupuzezosub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/18910634634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/61174507220.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 2

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_off00007362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7362 5284 bytes
SHA-256: cd48ef758648442e72f7a7780575c72eab1bb37b61c6cfd8fac0fcb4f031c758
font_01_sfnt_off00008568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8568 9844 bytes
SHA-256: d8d1d0b6614442eb380c9993287a55533e683308dc1b04338abf8df0f68eaffc

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