Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1c464ed2b8c9659…

MALICIOUS

PDF

81.0 KB Created: 2020-07-27 08:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7b53d067a7f04c1ee279cb0149f1674 SHA-1: 0b867963499c86c5212f94db4c60248e49e76a3b SHA-256: a1c464ed2b8c9659e9da2ee9e7efcd3f1dcadb253435ccc7435c8400c7dadfc0
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, appears to be a lure related to a game achievement guide. The primary malicious indicator is the presence of numerous links, with one pointing to a known malicious redirector, suggesting a phishing or spamming campaign.

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=chaos+on+deponia+achievement+guide In PDF document text
    • http://files.amenedit.com/uploads/1/3/0/7/130775304/pedidejazoxilosasute.pdfIn PDF document text
    • http://files.rearwindowphotography.com/uploads/1/3/1/0/131070940/ledimodakedafapim.pdfIn PDF document text
    • http://files.offcentervt.com/uploads/1/3/1/4/131438784/8957634.pdfIn PDF document text
    • http://files.maronianinsurance.com/uploads/1/3/2/6/132695832/defurer.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/1/0430/9372/1255/files/39867693429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/52272537714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/53740575868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/8615476085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32686583269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7795/9833/files/virenilesuvejugusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/bedakow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/vugododota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/pisewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0772/8023/files/88383023512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/19830736713.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_off0001006a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006A 5324 bytes
SHA-256: 0615b7ea969e07949247eb2644952466365d424cf0336accc64d99994dce1315
font_01_sfnt_off00011266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11266 10712 bytes
SHA-256: ce4a6d12625f9a4765dd0ad3c4555d2577d1099a05218a9509c485dfa87107f0

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