Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8aafb90fc372517…

MALICIOUS

PDF

34.1 KB Created: 2020-08-12 14:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2710627c12271a9c51def27d23b5234 SHA-1: de315274e11a203e9bfc57a860d796cfe7427bec SHA-256: c8aafb90fc372517835b39844062f0b88dbfaaf9563098eb973d144227e7e5d2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link farm and a malicious redirector URL, indicating an attempt to lead the user to a harmful site. The document body, though partially corrupted, suggests a lure related to 'architecture colleges in Pune PDF'. The presence of numerous external links, many hosted on Shopify, points towards a link farm SEO strategy to obscure the malicious redirector. The primary malicious IOC is the redirector URL, which is designed to funnel users to potentially malicious content.

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/pify?keyword=list+of+architecture+colleges+in+pune+pdf In PDF document text
    • http://rebiwi.garydrakeart.com/uploads/1/3/0/7/130775537/e6d28e.pdfIn PDF document text
    • http://kofiwadif.pottersaddict.com/uploads/1/3/1/8/131856372/xovozesexemusim.pdfIn PDF document text
    • http://files.mcesmonroe.com/uploads/1/3/1/8/131857315/3475975.pdfIn PDF document text
    • http://livezupi.briannadipilato.com/uploads/1/3/0/7/130738970/gamin.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/1/0437/2499/6758/files/wababerofonope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3417/1813/files/1935550036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/69843072863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7815/2345/files/nixogefovibawedaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4550/3655/files/11087425005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/tet_paper_1_answer_key_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/duvosaxodazafan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0467/1646/files/21114734607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/ledubozonizeserirozemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/vehicle_bill_of_sale_louisiana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/facebook_open_graph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/temabowenavunimusi.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 6

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_off0000480d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x480D 5360 bytes
SHA-256: 33c78f6c063d25ec23c1f715c80da6ab79de56692c2e75f808e4a61bfef7b05a
font_01_sfnt_off00005a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3A 9748 bytes
SHA-256: 4025b3eccd24fa70ddd712402ee9b212b6127ddb80016a6b2aa89785f2f6eedf

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