Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f5ac8eea706d00…

MALICIOUS

PDF

45.6 KB Created: 2020-08-15 01:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 155f7f10118b506553f1e2554d3a541c SHA-1: 1d547e530acb7451c179dee4bfeb95478f1f9cd4 SHA-256: e7f5ac8eea706d00af757788a3e2806aa22bf36a3099b219a7515fe35435cbfb
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a URL associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'Oxford dictionary of english apk' and multiple URLs, including the primary malicious one. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or scam attempt.

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.com/pify?keyword=oxford+dictionary+of+english+apk In PDF document text
    • http://files.richmenlooks.com/uploads/1/3/1/3/131381675/zawatixiwemipubo.pdfIn PDF document text
    • http://files.fixfonezfast.com/uploads/1/3/1/4/131453919/1800237.pdfIn PDF document text
    • http://files.hilemanstaxandpayroll.com/uploads/1/3/1/3/131384025/fufefivegumawatirup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3455/0177/files/fomatonoxowojoranod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/lobosukevipufaxaluva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/rewrite_the_stars_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/68523334569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2027/8171/files/37660850083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/lv_car_insurance_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/17050145065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/tolavazirede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5261/files/xenenavegenawigod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1996/files/majemive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7325/5062/files/witoliditaxejideniso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCE 5464 bytes
SHA-256: 21510d72f90494337ed80775f8dd187862ad918b48c4e0ca6a389490d4633748
font_01_sfnt_off0000726b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 15760 bytes
SHA-256: d7aaba8e47eb5e96ff4032836fc96154f1bc3fcc1feebeefb5d56a35591d9a98
font_02_sfnt_off00009b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B82 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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