Malicious PDF — malware analysis report

Static analysis result for SHA-256 3838238815b47c80…

MALICIOUS

PDF

41.9 KB Created: 2020-08-03 16:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 107f1faca9d28238328e85b8a8fcbb63 SHA-1: c220a83dfdc199494595a3075ce18efb8de6c2e3 SHA-256: 3838238815b47c8084557b4431df7856fb3043a0b281e9b038507b68a589a9b7
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 disguised as a civil construction company profile. The document body, though heavily obfuscated, contains text related to 'civil construction company profile pdf' and the malicious URL. The presence of a link farm and the ML classifier's high confidence further support the malicious nature of this document.

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=civil+construction+company+profile+pdf In PDF document text
    • http://files.1lovesurfing.com.au/uploads/1/3/1/4/131437778/5708563.pdfIn PDF document text
    • http://files.foundersparkhighlands.org/uploads/1/3/2/6/132683188/nizana.pdfIn PDF document text
    • http://files.jsuhonorband.com/uploads/1/3/2/7/132710634/7bb2097d1c.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/1/0429/2273/7830/files/kimotewunajexuwuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/21816859722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/wojasafobubajuxedodesili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/firunepanatakomewik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9866/7163/files/jonomovedukoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/rosatalagugipexogab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/47602249479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6260/7518/files/xorit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/brandenburg_concerto_5_sheet_music_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/9554351389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/36614031460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puliwaxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/osrs_autocast_curse.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 7

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_off0000665e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665E 5368 bytes
SHA-256: e71bf668ab1bc1150e7c0f3f83d21d1e088f353fdd44d7cf1ac6310be710ee0d
font_01_sfnt_off00007892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7892 9964 bytes
SHA-256: 3eb328c1474c50118b10e1936f1ccb1dd2e74d94a1a3ef869521756d94a2479b

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