Malicious PDF — malware analysis report

Static analysis result for SHA-256 af3502d9b1c246e6…

MALICIOUS

PDF

40.6 KB Created: 2020-03-26 02:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-07-24
MD5: 767d26271b54ac18a9c5bbbcb4d723d9 SHA-1: 0b7d8aeca7670bb8f47d4d8d5768c5250b504724 SHA-256: af3502d9b1c246e61d7b861b228f808ea3fed8aa019c6c880ce41292aebc2a79
96 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests the document is designed to manipulate search engine results or distribute content from these external locations. The embedded URLs and the document body, though partially corrupted, reinforce the presence of these external links.

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://kouturemilan.org/uploads/1/3/0/5/130548039/130548039.html#parto+eutocico+english PDF link annotation
    • http://themaskcaraartist.com/uploads/1/3/0/7/130740524/3433741.pdfIn PDF document text
    • http://lifeaffirmingbusiness.com/uploads/1/3/0/3/130323154/9699543.pdfIn PDF document text
    • http://www.tonyyanblog.com/uploads/1/3/0/6/130621203/732bd658.pdfIn PDF document text
    • http://premierumbrella.com/uploads/1/3/0/4/130477126/7532715.pdfIn PDF document text
    • http://inthespiritstore.com/uploads/1/3/0/5/130551154/mitikisalomatepodu.pdfIn PDF document text
    • http://houserentalreviews.com/uploads/1/3/0/3/130313013/fakodululukopasiva.pdfIn PDF document text
    • http://freesiteforum.com/uploads/1/3/0/7/130776341/1c922ad.pdfIn PDF document text
    • http://chiavevents.com/uploads/1/3/0/7/130775489/jefalirumadusa-luzuwifexu-dexozatoxokewe-lipaz.pdfIn PDF document text
    • http://ahnadunnwilder.com/uploads/1/3/0/6/130639945/ketilizivodo.pdfIn PDF document text
    • http://rickreedphotography.co.uk/uploads/1/3/0/5/130590355/dijawefasap-xofipivuse-lemonazokareka-noridomot.pdfIn PDF document text
    • http://urdumitra.com/uploads/1/3/0/5/130550664/225508.pdfIn PDF document text
    • http://www.steelcitytavern.com/uploads/1/3/0/2/130273980/pibesex-zigedi.pdfIn PDF document text
    • http://thejcrawfordagency.com/uploads/1/3/0/6/130620756/1f1eb120e1d0b81.pdfIn PDF document text
    • http://tinastouchjewelrydesigns.com/uploads/1/3/0/6/130621093/8178073.pdfIn PDF document text
    • http://unicornartisans.com/uploads/1/3/0/2/130289430/b8e04a39eb6.pdfIn PDF document text
    • http://administrator.bridgettempest.com/uploads/1/3/0/7/130739142/9011064.pdfIn PDF document text
    • http://www.todoenmotocarros.com/uploads/1/3/0/6/130604162/4ca078.pdfIn PDF document text
    • http://www.drgnwear.club/uploads/1/3/0/6/130639535/lekozekinos.pdfIn PDF document text
    • http://herringhotelbp.com/uploads/1/3/0/5/130590481/rotal.pdfIn PDF document text
    • http://edmbeautybar.com/uploads/1/3/0/7/130740566/saforev_nifomozirek.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

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_off00007577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7577 8232 bytes
SHA-256: 77b159c1242691ff8b2ab4eb57ea45f30c205e06693d98ec8a3ce19769aab1d1

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