Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f694c0138df0757…

MALICIOUS

PDF

34.8 KB Created: 2020-08-10 12:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62a2da437e68d3d1e03ff036a7eedda9 SHA-1: c18dfd3d1bfe217a767f675391633868f6a8630b SHA-256: 7f694c0138df07571593a340d699b89c418ab009dfcd2485fdb0f23f99378a09
194 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a redirector infrastructure associated with malicious activity. The document body, though heavily obfuscated, contains a URL that is also present in the redirector links, suggesting a lure for free downloads. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution.

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=microbiologia+veterinaria+quinn+pdf In PDF document text
    • http://farogipa.mg-aviationphotography.com/uploads/1/3/2/8/132814930/44fc8a4ce7.pdfIn PDF document text
    • http://files.paschoolpress.org/uploads/1/3/2/6/132683228/pidob.pdfIn PDF document text
    • http://files.ndeauction.org/uploads/1/3/0/8/130814466/fatidev-lotebozir-lesagenus.pdfIn PDF document text
    • http://files.koehlerscale.com/uploads/1/3/1/3/131382030/1461808.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/1/0432/5271/1582/files/94035380793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/wimumofupopipit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/31846951438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/jquery_1._9_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0747/4844/files/wugegesorunuped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/check_if_key_in_dictionary_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/18380583206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/71087550480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/97052569396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/kefinolox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3815/0549/files/pandoc_html_to_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/88518905906.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_off000049bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49BC 5476 bytes
SHA-256: a565c8a92881c4916dd237d9e05a55ba01703565d6002f1594042cc326e89e5b
font_01_sfnt_off00005c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 9876 bytes
SHA-256: d1a49e2d2a137e58ed5782bcd081278f7987c841730af236ca58ecaf36a58d39

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