Malicious PDF — malware analysis report

Static analysis result for SHA-256 839151f8cd805a09…

MALICIOUS

PDF

42.6 KB Created: 2020-03-14 22:15:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 58fd6a6e22e7f7d78b0dd58a561edf96 SHA-1: ac11c01faeec3ae5930218acdbb8af38a8959246 SHA-256: 839151f8cd805a09eed3c05dd9f5d1b4be8cc7de65621f833aad4de445aabc8f
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are structured as a link farm, suggesting an attempt to drive traffic to malicious or spam content. The primary URL found in the document body, http://wrdq8.bpmtc.com/uploads/1/3/0/7/130776125/130776125.html#raiders+of+the+north+sea+android+review, is presented as a game review, likely a lure to entice users to click and potentially download further payloads or be redirected to phishing sites. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://wrdq8.bpmtc.com/uploads/1/3/0/7/130776125/130776125.html#raiders+of+the+north+sea+android+review PDF link annotation
    • http://agilebreeding.org/uploads/1/3/0/3/130324126/350733.pdfIn PDF document text
    • http://www.polarisbluestar.com/uploads/1/3/0/5/130589384/paziz_vobof_ribigapumapub.pdfIn PDF document text
    • http://www.insideclarkscloset.com/uploads/1/3/0/5/130539053/xumuluz.pdfIn PDF document text
    • http://greaterbethelmadison.org/uploads/1/3/0/8/130813366/1295008.pdfIn PDF document text
    • http://www.friendlygriffin.org/uploads/1/3/0/5/130588232/menejudegivanategaw.pdfIn PDF document text
    • http://mta-sts.mx.lancemoshercreations.com/uploads/1/3/0/8/130814714/8241088.pdfIn PDF document text
    • http://helpmedomore.com/uploads/1/3/0/4/130435892/gupirowuxirog.pdfIn PDF document text
    • http://tanabewedding2018.com/uploads/1/3/0/7/130776718/6b081.pdfIn PDF document text
    • http://www.nhweddingdresses.com/uploads/1/3/0/2/130271078/sabawinufagarewazesi.pdfIn PDF document text
    • http://maturefaps.com/uploads/1/3/0/7/130775108/1860496.pdfIn PDF document text
    • http://datefame.com/uploads/1/3/0/6/130605435/kimafe.pdfIn PDF document text
    • http://sarabryantcreative.com/uploads/1/3/0/9/130969354/rumuzolijovani.pdfIn PDF document text
    • http://deonu.com/uploads/1/3/0/6/130605278/zemifasiruserekive.pdfIn PDF document text
    • http://www.lfworkplace.com/uploads/1/3/0/5/130539928/vobevogopow.pdfIn PDF document text
    • http://inflatedproducts.com/uploads/1/3/0/5/130543158/pirozojatavil.pdfIn PDF document text
    • http://www.igamma-group.com/uploads/1/3/0/7/130739404/9215685.pdfIn PDF document text
    • http://www.morganelwell.net/uploads/1/3/0/7/130776592/8538494.pdfIn PDF document text
    • http://hvo48.slpny.com/uploads/1/3/0/6/130621815/6407498.pdfIn PDF document text
    • http://alcoacommunityfcu.com/uploads/1/3/0/5/130543134/9515467.pdfIn PDF document text
    • http://www.beachbunkers.com/uploads/1/3/0/5/130539494/mikawesunojug_wokudavof.pdfIn PDF document text
    • http://adriannesblends.com/uploads/1/3/0/4/130483494/1023640.pdfIn PDF document text
    • http://www.visitclemsonhonors.com/uploads/1/3/0/8/130813979/sazawawikagow.pdfIn PDF document text
    • http://staurfoods.net/uploads/1/3/0/2/130272573/7594623.pdfIn PDF document text
    • http://aceacademic.com/uploads/1/3/0/2/130271082/82e9db5db6.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
🗂 Part of campaign: datefame.com 4 samples

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBF 7348 bytes
SHA-256: 892800006f6b25349faf56a98a8a91464e5226f4316ef479ad58cb6943b6f57f

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