Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3fb0c4fc3af93a1…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 04:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79d83e8a5a62949707a946c2eb3e30e3 SHA-1: 4073e82ee315232c63d36ec12b333af7c5c67383 SHA-256: a3fb0c4fc3af93a1e463151021713e280afc843ba24ddf4f089cdc36d7e918db
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.ru/pify?keyword=framing+agenda+setting+and+priming+pdf', which is flagged as malicious. The presence of a link farm heuristic further suggests an attempt to distribute malicious content or engage in SEO poisoning. No scripts were extracted from this sample.

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=framing+agenda+setting+and+priming+pdf In PDF document text
    • http://pufam.evansms.com/uploads/1/3/1/6/131607712/483764cd.pdfIn PDF document text
    • http://files.michiganskymedia.com/uploads/1/3/0/7/130775784/memowi_ripofo_xusulemales.pdfIn PDF document text
    • http://files.zfamilyenterprises.com/uploads/1/3/2/3/132302733/7499779.pdfIn PDF document text
    • http://zuzanido.cleanfreshbeauty.com/uploads/1/3/2/3/132302936/5347666.pdfIn PDF document text
    • http://files.krwoodworkings.com/uploads/1/3/1/8/131871894/1591208.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/1/0431/3851/5095/files/zotaketuxelaxel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/tirilinedizamaliputewizof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/foxit_reader_for_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2108/9444/files/energia_hidraulica_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/duzulegosebiwolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/vibugivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/28203952682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/tifisopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/deezloader_remix_download.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 8

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_off00006a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 5284 bytes
SHA-256: 2c20d84151b8680daa1d7e06a42b734e82e84d152fb79daef8cc04c55f54efb0
font_01_sfnt_off00007c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C74 10064 bytes
SHA-256: f819395cbf57cb453a915ba1129ba7eccb1d5779d90a51891ab374f9d93b084c

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