Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f61182ddc22ca33…

MALICIOUS

PDF

49.8 KB Created: 2020-08-10 09:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7c32c2cc209ed2119e32b0d86a0a9cd SHA-1: 8c09ed74dedf788ed933ccf663385efa4830430f SHA-256: 1f61182ddc22ca33fa7d025f7f9dcd7622ddd6120fb1ef4d8fe88590be73f421
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a government agreement. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt to increase visibility of the 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=acuerdo+gubernativo+89+2020+pdf In PDF document text
    • http://files.kikw.com/uploads/1/3/0/8/130874647/5703838.pdfIn PDF document text
    • http://files.tretheweyguesthouse.co.uk/uploads/1/3/1/6/131607131/vekigijub-rujebavovaxer-lirazazenanip-lorajepipelifi.pdfIn PDF document text
    • http://files.beadvillechaska.com/uploads/1/3/0/8/130873829/5400236.pdfIn PDF document text
    • http://files.intellectualgroomers.com/uploads/1/3/1/0/131070604/xaxabuje.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/1/0432/2433/4498/files/37288380267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6948/6757/files/gevor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9494/8517/files/45402243214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9467/0498/files/2596461396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8607/6309/files/23208010331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/kedorakopupozumede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/largest_prime_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/rojuvesopiluruzexaguga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/gimapapogelifinetoj.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 4

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_off0000722e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 5808 bytes
SHA-256: 857b5df7d7df66e994549e032d1dd0a1a3b360084c53444d6fb4fe30f395f3dd
font_01_sfnt_off000085fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FA 11400 bytes
SHA-256: 18bd72e050a366c1c8b50b4fee25fdeb214bd1874eae05d09206849c15732409
font_02_sfnt_off0000aad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAD7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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