Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff59cf1383a372a7…

MALICIOUS

PDF

42.7 KB Created: 2020-03-10 14:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3222b160d245a1c5f1be6c1c8c9b8ead SHA-1: 97af039a25c22f09c5b48089d3b354fac71e1114 SHA-256: ff59cf1383a372a709cb8bc4fec2bfa5885abff1cfe2546296f9013466a106ff
94 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious websites. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to unrelated domains supports this assessment. No scripts were extracted from this sample.

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://podollanportal.devsite-1.com/uploads/1/3/0/4/130490833/130490833.html#acer+predator+helios+300+gaming+laptop+i7+16gb512gb+gtx+1660+review
    • http://learnabundance.com/uploads/1/3/0/6/130604541/gezasata_boropupoxigukul_sunukobig_rotedigoj.pdf
    • http://www.thechislichouse.com/uploads/1/3/0/6/130603764/5164237.pdf
    • http://mmjbookkeeper.com/uploads/1/3/0/7/130776220/8711d36ab3510.pdf
    • http://cheftotablecatering.com/uploads/1/3/0/8/130814112/pujaze.pdf
    • http://moretondivingandmarinecontracting.com/uploads/1/3/0/4/130488621/baguri.pdf
    • http://webmail.buildersbookkeeper.com/uploads/1/3/0/8/130813998/1353624.pdf
    • http://terranfarmequineproducts.ca/uploads/1/3/0/5/130589354/0908408e.pdf
    • http://miamilifebyluis.com/uploads/1/3/0/4/130488265/rixunaderu_doxepujitiwut_tiribexonatoxu_nenega.pdf
    • http://plantconnectioninc.com/uploads/1/3/0/8/130873979/pilofiko.pdf
    • http://andymageekidspartyhire.com.au/uploads/1/3/0/6/130639021/rapiwer_wetamoj_vofudoje.pdf
    • http://jessdootson.com/uploads/1/3/0/9/130969176/todaros.pdf
    • http://thephysiodepot.com/uploads/1/3/0/5/130588980/d412ba260a050.pdf
    • http://constellationentertainment.com/uploads/1/3/0/2/130291658/lajabujas.pdf
    • http://thenetaportergroupdna.com/uploads/1/3/1/0/131070054/7480928.pdf
    • http://www.mollysteinwald.org/uploads/1/3/0/6/130603874/6518589.pdf
    • http://twincitiesceremonies.com/uploads/1/3/0/5/130588796/893892.pdf
    • http://collinsmslibrary.org/uploads/1/3/0/7/130740163/xugerej.pdf
    • http://amayaconsulting.net/uploads/1/3/0/4/130489222/2055052.pdf
    • http://www.brazcomonline.com/uploads/1/3/0/3/130379711/forudewuwar-fatesukax.pdf
    • http://www.katrinroberts.com/uploads/1/3/0/8/130874683/7159279.pdf
    • http://jasmyncarter.com/uploads/1/3/0/5/130544447/tabevijiladovabusix.pdf
    • http://northcountypronetworkers.com/uploads/1/3/0/6/130604923/dajakuwe-wumevezaravox-bulefugix-zafolujozuxatuw.pdf
    • http://terrapin-llc.com/uploads/1/3/0/4/130493037/2fa5eee3ef3f.pdf
    • http://butterfliesandsweat.com/uploads/1/3/0/3/130323319/3d16a37871c8613.pdf
    • http://antisocial-tenebrosity.com/uploads/1/3/0/3/130313345/bojiwoza-tusigijisasot-remoku-kanaropiranodi.pdf
    • http://northcountypronetworkers.com/uploads/1/3/0/6
    • 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_off00007cb2.bin
a70c4f964bb82998da6e631eb9c506228715f90ae4532e383edec72076aed116		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB2 8112 bytes

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