Malicious PDF — malware analysis report

Static analysis result for SHA-256 30963972c20e5d66…

MALICIOUS

PDF

72.7 KB Created: 2021-01-04 22:23:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 18fe78aced691ca86d97171cf969f83d SHA-1: bfd9275c8f36e5cbb5fb692df29d1e8abc0ea4f3 SHA-256: 30963972c20e5d6634c3fa153a249f0ad5a117eee68aadbf08dbfafe1e7a3708
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, including critical detections for linking to known malicious redirectors and hosting a link farm. The document body, though heavily obfuscated, suggests a lure related to 'wheels in motion defensive driving quiz answers'. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/123?utm_term=wheels+in+motion+defensive+driving+quiz+answers In PDF document text
    • https://cdn.sqhk.co/taduzotul/6ihibhj/mcdonald_s_phone_number_in_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/Pijifhi/42336455448.pdfIn PDF document text
    • https://basazujuw.weebly.com/uploads/1/3/5/3/135301233/dexipuramuwibogixuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/vivupedasez/ygcSjap/diy_woodworking_crafts.pdfIn PDF document text
    • https://wizamezuladad.weebly.com/uploads/1/3/4/3/134351213/6478658.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://xesilowavexaweg.weebly.com/uploads/1/3/4/2/134265648/acb407e720.pdfIn PDF document text
    • https://siwusoxol.weebly.com/uploads/1/3/4/5/134584737/2351318.pdfIn PDF document text
    • https://cdn.sqhk.co/nugutobudan/Dibkkdn/realpolitiks_mobile_apk_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c27c44a-ec3e-40fb-85da-3308ed2c8eca/31187918195.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/college_football_schedule_2020_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba2e7c2e-cbe7-41a4-86bc-40f1b2bab969/sumexot.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/bible_software_for_android_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3629d90f-d430-44d0-8107-5dea7a1234df/zetotexema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef94afee-76b3-4c08-b393-c504497a59a6/50446526969.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_off0000df94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF94 5660 bytes
SHA-256: d801a702224c3aed76e22c64e37c5703d121ad06f2fd22b8852b5edae2a7d4c1
font_01_sfnt_off0000f2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C1 10208 bytes
SHA-256: 113523ca6dcf0f813932598366f6895c879ed42ed41856a3bbc2ac819f0185e4

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