Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6e1a0219103260…

MALICIOUS

PDF

40.8 KB Created: 2020-03-10 05:37:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 9ae46aec3697445fd056eeba97ebc4ee SHA-1: 75af35534aea04444dbc6c521ce4d526067eb166 SHA-256: 2f6e1a0219103260d7956c65722773ad62601c00773e3a3867b533922be133a8
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to various domains, many of which follow a similar numeric or alphanumeric slug pattern. This indicates a link farm or redirection scheme. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to a network of SEO-optimized PDF files hosted on diverse domains, likely for malicious redirection or content delivery.

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://dedicated-17.pleasingfood.com/uploads/1/3/0/4/130476943/130476943.html#esl+3rd+conditional+worksheet PDF link annotation
    • http://spd-bremen-stadt.com/uploads/1/3/0/6/130621220/ea1a1a7de.pdfIn PDF document text
    • http://houseinstpaul.com/uploads/1/3/0/6/130639775/norigimefur-walopavukoz.pdfIn PDF document text
    • http://www.cupydusgioielli.com/uploads/1/3/0/5/130539659/4fc027ccd7a0.pdfIn PDF document text
    • http://www.oyegeneralmotors.com/uploads/1/3/0/8/130814843/badizozigefofogobowi.pdfIn PDF document text
    • http://night-at-the-museum-rotary.org/uploads/1/3/0/6/130620267/8719643.pdfIn PDF document text
    • http://horn-comb.com/uploads/1/3/0/4/130483325/wobekejimotanubot.pdfIn PDF document text
    • http://www.sueellensmith.com/uploads/1/3/0/5/130550762/vesonujad-sezogipilupa-pejivig.pdfIn PDF document text
    • http://mldesigns4u2.com/uploads/1/3/0/6/130604247/lasuxawis.pdfIn PDF document text
    • http://yourgigpartners.com/uploads/1/3/0/5/130550741/jutaduvom_dinofosan_nedewuj.pdfIn PDF document text
    • http://nybellhouse.com/uploads/1/3/0/4/130476607/f0d03e9fcbb43.pdfIn PDF document text
    • http://www.grizzlycreekhomeservices.com/uploads/1/3/0/5/130590461/6999495.pdfIn PDF document text
    • http://thehatstore.us/uploads/1/3/0/4/130483322/41bc2f9f.pdfIn PDF document text
    • http://sethc.net/uploads/1/3/0/5/130588216/rifekejokowor-tidofotanolam-gabema.pdfIn PDF document text
    • http://neibaurart.com/uploads/1/3/0/6/130639781/8cab5.pdfIn PDF document text
    • http://peaceandlovegranola.net/uploads/1/3/0/2/130288722/8dec34d.pdfIn PDF document text
    • http://mitco-solutions.com/uploads/1/3/0/4/130483134/mipejesalozejemid.pdfIn PDF document text
    • http://www.hrmhack.org/uploads/1/3/0/5/130588240/bawumesokaniz-xixab-zudoromofak-nugokiman.pdfIn PDF document text
    • http://stylerolodex.com/uploads/1/3/0/7/130738889/2546134.pdfIn PDF document text
    • http://moorehousecreations.com/uploads/1/3/0/5/130589199/bamotego.pdfIn PDF document text
    • http://yogurtfill.com/uploads/1/3/0/2/130289338/38397ab367.pdfIn PDF document text
    • http://dragonflyproductions.biz/uploads/1/3/0/5/130543656/ae48468.pdfIn PDF document text
    • http://www.loosenuptea.com/uploads/1/3/0/5/130552016/gutudexegupewa.pdfIn PDF document text
    • http://nextlevelgearhead.club/uploads/1/3/0/6/130621214/d3ed3272.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

Related samples 5

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_off0000744d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744D 8088 bytes
SHA-256: 19b6055121b73b392c84e7fdd133c9e87c312ea656d3eb37552114c2078fbe27

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