Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f1ce4ad6881b7b…

MALICIOUS

PDF

43.3 KB Created: 2020-11-02 11:32:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: bbd194619d9ae2e975ce07fe80fd555d SHA-1: 315fd84c0aab6fe77c66b5eee19b4c3c077786e4 SHA-256: 30f1ce4ad6881b7bf0b6a7680308d2c7f3fc5c91903c424458594f4e03f21972
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document acts as a link farm, embedding numerous URLs that lead to potentially malicious content, including a redirector at 'ttraff.club'. The document body, though partially obfuscated, contains the lure text 'natural gas pipe sizing calculator 5 psi' and the malicious URL, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of multiple links to disposable hosting reinforces the malicious intent.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/123?keyword=natural+gas+pipe+sizing+calculator+5+psi In PDF document text
    • https://mutimerujufidi.weebly.com/uploads/1/3/4/5/134526942/319b8.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/9460805.pdfIn PDF document text
    • https://gukijofajileraw.weebly.com/uploads/1/3/4/3/134392650/rigivozizisalo.pdfIn PDF document text
    • https://ponopuxebi.weebly.com/uploads/1/3/4/3/134365602/518c83bc6da.pdfIn PDF document text
    • https://sifizebutu.weebly.com/uploads/1/3/0/8/130814914/mesotadino.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/soxakogu-pemiboki-dasepab.pdfIn PDF document text
    • https://kawewadibuporak.weebly.com/uploads/1/3/4/3/134371142/busorapowizol_jisimawo_zimalosap.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/vupedipepirip-molovidofuruk.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/1/0266/9664/6837/files/pesazenetabav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe3b3697-2e9a-4e5f-bb9c-d6a9914da4ed/el_zar_y_la_camisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2395/3828/files/context_clues_task_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9228331-c911-4e06-bffc-312e406da507/jigajiselojenipow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/download_apk_delta_gb_whatsapp_terbaru.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_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 5244 bytes
SHA-256: 838b31169596c4b8a8b066b4dd434af9f1211fe50aeaeb92aafe197f6a84d6f5
font_01_sfnt_off0000782f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782F 11620 bytes
SHA-256: 43af610ea843b458f597c7325c69466a968e1b8ec66c4a10ea74507bafb98093

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