Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ded1a19fcabe67…

MALICIOUS

PDF

44.5 KB Created: 2020-07-08 15:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: c36ade1ac62b12a16663a76bb5ecbea7 SHA-1: b927842d9fd9185e0fc426b8a1424f6a1c948fbd SHA-256: b1ded1a19fcabe67ebe15f41a177d36ba1f0bc288be7c97d70aa429946594741
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a large number of embedded links, identified as a PDF link farm. One of the primary links redirects to a known malicious infrastructure at 'ttraff.com'. The document body, though partially corrupted, contains text related to a '2016 subaru legacy limited owners manual', suggesting a lure to disguise the malicious links. No scripts were extracted from this sample.

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.com/wb?keyword=2016%20subaru%20legacy%20limited%20owners%20manual In PDF document text
    • http://files.balloontwistersdcvamd.com/uploads/1/3/0/9/130969375/gipagazovupibiz_tolokaduwimola.pdfIn PDF document text
    • http://files.broadbandaccess.org/uploads/1/3/2/6/132695572/2298a.pdfIn PDF document text
    • http://files.topgrouptravel.com/uploads/1/3/0/9/130969503/wetidopijubo-pojofitop-pupikibutuji-xazufufetinexe.pdfIn PDF document text
    • http://files.listowelchildcare.com/uploads/1/3/1/6/131636914/af15734bdd.pdfIn PDF document text
    • http://files.computerscpr.com/uploads/1/3/2/7/132740860/xubujolodosetejokuv.pdfIn PDF document text
    • http://files.illinoismep.com/uploads/1/3/1/6/131606550/c1b3ef.pdfIn PDF document text
    • http://files.breedingforthefuture.com/uploads/1/3/2/6/132681566/sutavumuz.pdfIn PDF document text
    • http://files.quantumpoint.org/uploads/1/3/0/8/130874031/fexurugomaseba_livorejalolokib_kuluvewowa.pdfIn PDF document text
    • http://files.whitegallowaysofwayby.com/uploads/1/3/0/8/130873907/fewubogukobavel-sixomolimu-mifip.pdfIn PDF document text
    • http://files.otterworksusa.com/uploads/1/3/1/4/131437351/tasegus-rekafi-zeganusisaj-jigavulef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pijugelupuw.files.wordpress.com/2020/07/82586682255.pdfIn PDF document text
    • https://joguvabevas.files.wordpress.com/2020/07/pipufobarer.pdfIn PDF document text
    • https://jekiwex.files.wordpress.com/2020/06/bemiwo.pdfIn PDF document text
    • https://pixapivuba.files.wordpress.com/2020/07/80994160045.pdfIn PDF document text
    • https://xemavepin.files.wordpress.com/2020/07/sivogurisegubota.pdfIn PDF document text
    • https://zudazomup.files.wordpress.com/2020/07/15145198776.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_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 5860 bytes
SHA-256: f108485881e627f270cb718c2fa1b02b067ddcba8b04009d92e0ea3597220fbb
font_01_sfnt_off0000775f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775F 14584 bytes
SHA-256: f599a5f4b1096c6fa402c319e714d3254577053d84fe2e400d5e7f4c411624ee

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