Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5d9c6936600c22…

MALICIOUS

PDF

43.0 KB Created: 2020-03-08 05:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 43994ad3fe9a68aa50b96c461e4b7888 SHA-1: 08364001f67dfcf80c957a50f9f0520665485682 SHA-256: fd5d9c6936600c22869d7340c13d14d31a9ba911aec58284850515b128f719f7
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a potential attempt to distribute malware or phishing content through a network of linked PDFs. No scripts were extracted, limiting the analysis of direct payload execution.

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://74-123-79-170.mgwnet.com/uploads/1/3/0/6/130639800/130639800.html#adrenal+gland+and+stress+hormones PDF link annotation
    • http://millercustomconstruction.net/uploads/1/3/0/6/130604379/4035352.pdfIn PDF document text
    • http://themountainforge.com/uploads/1/3/0/2/130291649/nolovezusi-rufakep-faliremebix-mexifo.pdfIn PDF document text
    • http://manofaran.net/uploads/1/3/0/6/130621401/4949831.pdfIn PDF document text
    • http://hostmaster.debicarmi.com/uploads/1/3/0/4/130488732/xekewajoji.pdfIn PDF document text
    • http://accountingredflags.com/uploads/1/3/0/8/130874128/2325755.pdfIn PDF document text
    • http://www.mavenblaze.com/uploads/1/3/0/3/130323620/bedubuzat.pdfIn PDF document text
    • http://hermenegildoaguiar.com/uploads/1/3/0/8/130874073/doninonuwadiga-tevexamowita-nasaxuv-givikuxivugexat.pdfIn PDF document text
    • http://tuin2go.com/uploads/1/3/0/2/130289399/1787918.pdfIn PDF document text
    • http://adhillc.com/uploads/1/3/0/4/130483163/1181809.pdfIn PDF document text
    • http://sexwav.com/uploads/1/3/0/6/130621784/zejiginubip-wumiju-tegososil.pdfIn PDF document text
    • http://mta-sts.mysterycorgi.com/uploads/1/3/0/2/130271082/fawesivivererolawipu.pdfIn PDF document text
    • http://www.redenexcbo.com/uploads/1/3/0/5/130589219/dilir_totakatunisarit.pdfIn PDF document text
    • http://bearvbaby.net/uploads/1/3/0/7/130739333/9896577.pdfIn PDF document text
    • http://www.igsystems.co.uk/uploads/1/3/0/8/130874541/3475692.pdfIn PDF document text
    • http://www.chelwoodchurch.com/uploads/1/3/0/7/130740490/burajiz_zirijobonititus_geper_wogezomoj.pdfIn PDF document text
    • http://mrsdsmithsthirdgrade.com/uploads/1/3/0/2/130272478/51b11374f4.pdfIn PDF document text
    • http://www.isakorp.com/uploads/1/3/0/2/130272395/c80ceb315.pdfIn PDF document text
    • http://deitzlandsurveying.com/uploads/1/3/0/7/130776447/34d80293c.pdfIn PDF document text
    • http://mrsottocounselingcorner.com/uploads/1/3/0/5/130590200/e729aaf2a6b.pdfIn PDF document text
    • http://rotateproxy.com/uploads/1/3/0/2/130272902/jepikirukizikan-lasibuju-tenuguvufuz.pdfIn PDF document text
    • http://thenextbestthingwhenyoucantwecan.com/uploads/1/3/0/6/130639110/ab42f373c1.pdfIn PDF document text
    • http://www.hondenfrisbee.nl/uploads/1/3/0/9/130969110/dalifelikaroz-tabefo.pdfIn PDF document text
    • http://mysorebeppu.com/uploads/1/3/0/8/130814342/mugitim.pdfIn PDF document text
    • http://goversatile.com/uploads/1/3/0/4/130488621/puzon-tipiwej.pdfIn PDF document text
    • http://scylax.org/uploads/1/3/0/6/130621206/3839989.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: accountingredflags.com 9 samples

Related samples 3

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_off00007e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E05 7768 bytes
SHA-256: bd9bd8dca6034438d2f5b38cc1097cc3731e3ae7a579fb10ea04743b4d4f9b3d

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