Malicious PDF — malware analysis report

Static analysis result for SHA-256 411d85d428607958…

MALICIOUS

PDF

74.3 KB Created: 2020-05-22 00:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 4db15724d24bf74502767f56ae4660f5 SHA-1: 45e24b0e6bc1ba385f8a674fd11b32c4a44b8031 SHA-256: 411d85d428607958ab9080e45abc69884360d41e117c8d3437824395b0627056
136 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files hosted on unrelated domains. The document body displays a "Service control manager error 7000" message, which is likely a lure to encourage users to click on the embedded malicious links. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://blackcardu.stefanaarnio.com/uploads/1/3/0/7/130740082/130740082.html#service+control+manager+error+7000 PDF link annotation
    • http://rollingoaksmemorialcenter.org/uploads/1/3/1/1/131164112/9022246.pdfIn PDF document text
    • http://josephsiinoart.com/uploads/1/3/1/4/131453623/b6e239f34d87.pdfIn PDF document text
    • http://suranceamerica.com/uploads/1/3/0/3/130313494/21e18ba1425f.pdfIn PDF document text
    • http://242bernie242.com/uploads/1/3/0/4/130491513/7570839.pdfIn PDF document text
    • http://patriotwastesolutions.net/uploads/1/3/1/3/131383624/bupomeb.pdfIn PDF document text
    • http://josecarlier.com/uploads/1/3/0/5/130539412/2200839.pdfIn PDF document text
    • http://scubaphone.org/uploads/1/3/1/4/131409616/1ec7c5.pdfIn PDF document text
    • http://creationsbydanilynn.com/uploads/1/3/0/4/130477719/tamitorazizu_kozof_bilagow_nulewiwel.pdfIn PDF document text
    • http://nutragredients.com/uploads/1/3/1/6/131637186/8252527.pdfIn PDF document text
    • http://assuntagiannico.com/uploads/1/3/1/3/131379546/3763684.pdfIn PDF document text
    • http://drbozner.net/uploads/1/3/0/7/130738805/9203797.pdfIn PDF document text
    • http://professionaligboladies.org/uploads/1/3/0/9/130969435/50a90999771e2a.pdfIn PDF document text
    • http://trccommons.org/uploads/1/3/1/0/131070719/nafoto.pdfIn PDF document text
    • http://taylortransit.net/uploads/1/3/0/3/130379824/zalunatenexerepu.pdfIn PDF document text
    • http://albatrosdeveloppement.fr/uploads/1/3/1/4/131452929/1833350.pdfIn PDF document text
    • http://bigpersonalitieslittleportraits.com/uploads/1/3/1/8/131856809/6d4e7daff.pdfIn PDF document text
    • http://ministeriocristianopoderdel.com/uploads/1/3/0/3/130313422/3072200.pdfIn PDF document text
    • http://recyclingsolutionsltd.com/uploads/1/3/0/6/130620573/voratizep_vininopitetedi.pdfIn PDF document text
    • http://rainbowbost.com/uploads/1/3/0/7/130775841/xodugaf.pdfIn PDF document text
    • http://sanah.co/uploads/1/3/0/7/130740419/guxodigomitapixafe.pdfIn PDF document text
    • http://ourcommunitymovement.com/uploads/1/3/1/4/131407588/1362912.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

Related samples 2

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_off0000f578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 11792 bytes
SHA-256: afe2bc22e8f419f831d279e4665e89fb09f4aa9271e4a21b07d49a7ba4d23cf3

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