Malicious PDF — malware analysis report

Static analysis result for SHA-256 0690fe636a154f0f…

MALICIOUS

PDF

41.0 KB Created: 2020-03-30 10:06:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 56b9aa1bf28fa1948d2e83a9315f66d9 SHA-1: be225682e54b39b8c84c5994da81057617b7115c SHA-256: 0690fe636a154f0ffb2c93053853e8920aed53f26bd404480e13e8041694cc5d
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary URL observed in the document body and heuristics is http://www.myshopblackburroclayworksgmail.com/uploads/1/3/0/7/130738814/130738814.html#alice+munro+runaway+quotes. This suggests the document is designed to drive traffic to a link farm, potentially for SEO manipulation or to distribute further malicious content.

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://www.myshopblackburroclayworksgmail.com/uploads/1/3/0/7/130738814/130738814.html#alice+munro+runaway+quotes
    • http://kokuasupport.org/uploads/1/3/0/5/130539255/fojifu_sesojej.pdf
    • http://polarinstall.com/uploads/1/3/0/4/130477252/6aa4ad01e.pdf
    • http://mercedes.fit/uploads/1/3/1/3/131381428/gujijomipabumo.pdf
    • http://moneyscript.co/uploads/1/3/0/6/130604233/diruduvolexalukuxil.pdf
    • http://communitywealthmi.com/uploads/1/3/0/6/130621964/wosuwar_xevajoka_bamebezuzex.pdf
    • http://katsanidesigns.com/uploads/1/3/0/6/130639851/7265e.pdf
    • http://interhacktive.org/uploads/1/3/1/1/131164507/lilamezolawokavefi.pdf
    • http://robinsewellphotography.com/uploads/1/3/0/3/130323214/vipovotoxufasud_mekakuderoge_worevam_vokafafena.pdf
    • http://nashvillebluetones.com/uploads/1/3/0/3/130313634/kutifozewepanito.pdf
    • http://preferredagpack.com/uploads/1/3/1/0/131071286/fusololuk.pdf
    • http://cltweddingmarket.com/uploads/1/3/0/3/130323592/0ed6ce0465a3a.pdf
    • http://theplaceofjoy.org/uploads/1/3/0/7/130739750/jedexosuvawode-kagobibuwigok.pdf
    • http://marleneinteriors.com/uploads/1/3/0/8/130813077/3151917.pdf
    • http://thebuxtons.net/uploads/1/3/0/5/130538866/e2b8410f3ce6.pdf
    • http://interbytestudios.com/uploads/1/3/0/8/130874413/7614888.pdf
    • http://gravityicecream.com/uploads/1/3/0/4/130483616/pemowisolijuxej-wegotaxoza-duruxol-kufevoso.pdf
    • http://kallibethartstudio.com/uploads/1/3/0/6/130604255/eb77b9515a77f.pdf
    • http://wedoinsurance.com/uploads/1/3/0/5/130543333/cba3fe465861f5f.pdf
    • http://anthonymvassallo.com/uploads/1/3/0/7/130739081/9387422.pdf
    • http://magnificentwindowdoorllc.com/uploads/1/3/0/6/130639266/3dd8307ef8c.pdf
    • http://arenju.com/uploads/1/3/0/5/130541402/lokofotezitibeso.pdf
    • http://thetraversecompany.com/uploads/1/3/0/6/130604263/tesoxe-lejafeboboroz-bugujomuka-tozijab.pdf
    • http://midicicastlerock.com/uploads/1/3/0/8/130874358/365d0f0b854d1f.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079cb.bin
4520b67528c6c39da4f3196938fcc15d57806d665ae50e2909ce6546d267f1ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79CB 7600 bytes

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