Malicious PDF — malware analysis report

Static analysis result for SHA-256 4022904a22abfda0…

MALICIOUS

PDF

40.0 KB Created: 2020-05-16 06:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: b04654777f70dfed9dc19df1b92185dc SHA-1: 8d677f8f1aaf8b5d2e13323341ea951771407ac4 SHA-256: 4022904a22abfda00bb75fa765557df8eba0a47444ca258d15084bdaed3c27c5
116 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, identified by the PDF_SEO_LINK_FARM heuristic. The document body also contains embedded URLs, including one pointing to 'woodlandstuition.com'. The presence of a QR code lure suggests a phishing or social engineering attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://woodlandstuition.com/uploads/1/3/1/8/131857734/131857734.html#easy+video+cutter+apk++for+pc PDF link annotation
    • http://shethinksthrifty.com/uploads/1/3/0/5/130589186/c54e431df167a.pdfIn PDF document text
    • http://munchandbagel.com/uploads/1/3/0/8/130874530/9649586.pdfIn PDF document text
    • http://mariemcstocker-hulme.com/uploads/1/3/1/0/131070806/786195.pdfIn PDF document text
    • http://trumpstickers.net/uploads/1/3/0/6/130620818/7a715775427e1.pdfIn PDF document text
    • http://eveninginrishikesh.com/uploads/1/3/0/2/130272877/wuxaw_bibakifiguve_dipafopawu_xoxeril.pdfIn PDF document text
    • http://mbradfordhealth.com/uploads/1/3/0/4/130483417/a6b25c1945ae7.pdfIn PDF document text
    • http://bgcsjc.com/uploads/1/3/0/7/130739712/9350588.pdfIn PDF document text
    • http://whyfollowsocialnorms.com/uploads/1/3/0/7/130739686/9295654.pdfIn PDF document text
    • http://dabsonsrealestateservice.org/uploads/1/3/1/1/131164202/984209.pdfIn PDF document text
    • http://fresprojanitorial.com/uploads/1/3/1/1/131163660/146d42612.pdfIn PDF document text
    • http://embracethemess.net/uploads/1/3/0/7/130739093/5553051.pdfIn PDF document text
    • http://blueroadproperties.com/uploads/1/3/0/5/130589337/funojed.pdfIn PDF document text
    • http://fsglobaltour.com/uploads/1/3/0/9/130969624/gitor.pdfIn PDF document text
    • http://polarlightresearch.com/uploads/1/3/0/9/130969824/misafovazegoreta.pdfIn PDF document text
    • http://blackgoldluxury.com/uploads/1/3/0/2/130288002/968858.pdfIn PDF document text
    • http://dungeonjunkies.com/uploads/1/3/1/3/131383802/160c5c409080.pdfIn PDF document text
    • http://owlcreekbridge.com/uploads/1/3/0/6/130605475/munugadudivagafona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B77 10372 bytes
SHA-256: 391dc19959657f4db2209fe9f55e26d026b545d6a6d61869e46356c91ed5a32a
font_01_sfnt_off00007f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1C 16168 bytes
SHA-256: 8c1e3298cb301b6aa2c2aeff0a89e1cafee6626e56d5ffa98ad52a7598c40df9

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