Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa5fa61aa777f65…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 00:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b582cdb49d0900d2d6e7de4a9b67e56b SHA-1: c6669b956a9ffc620497dff7a56ef42a3350967c SHA-256: efa5fa61aa777f6533a6d93d1bc41901ac3963696e3448dc6e412140253fb3b5
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to `ttraff.com`, a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the same redirect URL, reinforcing the malicious intent. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link farm.

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=esercizi+analisi+logica+seconda+media+da+stampare+con+soluzioni+pdf In PDF document text
    • http://files.sterlingblackevents.com/uploads/1/3/1/4/131438539/5764711.pdfIn PDF document text
    • http://files.chicagomovietours.com/uploads/1/3/1/8/131871902/xesowonekari_pedozurik_nexikivulosiku.pdfIn PDF document text
    • http://files.independencepyro.com/uploads/1/3/1/4/131483009/pavubuz_taparurusotaz_datok_fotakaramijape.pdfIn PDF document text
    • http://xurarekuf.immigrationusalawyer.com/uploads/1/3/1/0/131071243/4494182.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/1/0432/0470/6464/files/44483941438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/introduction_to_contrastive_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/papikorijej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/xolafabumusirosoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/62309549189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/56997866296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/81530539649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5589/files/bilingual_french_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/kexavelumejex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/24278059526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/9659764022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/50867713598.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_off00006c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C62 5480 bytes
SHA-256: 8d4432b1a2a3af2740db5f4d95cf2b0c8c0bc5977e3296f7f23ce85277bf5c6d
font_01_sfnt_off00007efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFC 10892 bytes
SHA-256: cc99ba6ae53138c3c36377f81aaddd99302c81b623b383ad016f1cf2827af6c4

Open this report in the interactive analyzer, or submit your own file for analysis.