Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe718e76f46e9557…

MALICIOUS

PDF

53.6 KB Created: 2020-04-09 21:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 7a0b95431daeb116e6fb6f5349d21e79 SHA-1: 21542c42556dd5446bf9f03f312a73b31a96db0f SHA-256: fe718e76f46e9557f0d08356785c8abc17b265f08955f74a0037d50f02f80f9e
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, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL points to a page with a title that appears to be unrelated to typical document content, suggesting a lure. The embedded URLs are likely used to redirect users to malicious sites or to manipulate search engine rankings. 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://ashleywrenacupuncture.com/uploads/1/3/0/6/130604175/130604175.html#mai+aarti+teri+gau+o+keshav+kunj+bih PDF link annotation
    • http://xabiaholidays.com/uploads/1/3/1/4/131407241/bewevikirotomap-deguziwidituwid-zewunizox.pdfIn PDF document text
    • http://boomorbustpermianbasin.org/uploads/1/3/0/7/130776037/juwalovufudijaweru.pdfIn PDF document text
    • http://thebeeskneesllc.com/uploads/1/3/1/4/131453486/betojofega.pdfIn PDF document text
    • http://upstategrowersandpackers.com/uploads/1/3/0/8/130873875/genobuvokog-soriguguse-zamazobedojexol.pdfIn PDF document text
    • http://flatironstraight.com/uploads/1/3/0/3/130312916/8549622.pdfIn PDF document text
    • http://sleepsa.net/uploads/1/3/1/1/131164312/5405022.pdfIn PDF document text
    • http://babykarebox.com/uploads/1/3/1/4/131406687/bb78a1cd6779799.pdfIn PDF document text
    • http://torchonecigars.com/uploads/1/3/0/4/130479472/4295621.pdfIn PDF document text
    • http://sacredsurrenderbirth.com/uploads/1/3/1/4/131438761/5888130.pdfIn PDF document text
    • http://elpc.marketing/uploads/1/3/0/5/130545334/7049778.pdfIn PDF document text
    • https://archive.mp3In PDF document text
    • http://fedorahosted.org/lohitIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000783a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783A 6796 bytes
SHA-256: 5ff5f39b087201f38286fce16b89759036c657d5a754ab78bc88e660c287957b
font_01_sfnt_off00009371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9371 1428 bytes
SHA-256: 91cf9cd4efac8f69dcdf587659185da8236567bce3e9e4f6a5ecd944f50fae4f
font_02_sfnt_off00009b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B07 15620 bytes
SHA-256: 4c7fc74390c61e521615a03fb47282ece3f8dc99b851894c99a8a64dfe3cfbb4

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