Malicious PDF — malware analysis report

Static analysis result for SHA-256 00256bfad75a2489…

MALICIOUS

PDF

41.9 KB Created: 2020-08-24 17:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 977a247fad85508d9956ba4b48c62f32 SHA-1: 39c9bb39f4d63db9ec01153c3bc95d80de0d6c39 SHA-256: 00256bfad75a24890ef9c42038cfddeb39743bbd2d146ae5951dcffdc68cf198
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a mass of external links, including one that redirects to known malicious infrastructure. The document body text, though partially obfuscated, contains a URL that appears to be a lure for users interested in 'Whatsapp video status punjabi songs'. The primary attack vector is likely a user clicking the malicious link, leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=whatsapp+video+status+punjabi+songs
    • http://files.firstchristiantexascity.org/uploads/1/3/0/8/130814042/zepojek-wipuzidapupuwe.pdf
    • http://files.anakoulouris.com/uploads/1/3/1/4/131453535/xixagagoxol-kejesuroz-nigupopusaw.pdf
    • http://files.pdxfastpitch.com/uploads/1/3/1/3/131384113/tavupubomiponitirar.pdf
    • http://buzuzow.commandcg.com/uploads/1/3/1/4/131437532/tusozivedi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/77600203583.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/juvime.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/ragiwil.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/10322983978.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9074/files/sia_chandelier_instrumental.pdf
    • https://cdn.shopify.com/s/files/1/0434/5767/5431/files/advanced_statistical_modeling.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/99905138785.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/algorithme_et_programmation_langage_c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/86975637408.pdf
    • https://cdn.shopify.com/s/files/1/0437/9328/5277/files/puffin_browser_free_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0439/0522/0763/files/fur_elise_piano_sheet_music_full.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/minirefotapobizezuloxot.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b4.bin
544df79945cb050635d400840fdd5e82f58e67bb9e87bf6a3e77f521eed7bcf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 5380 bytes
font_01_sfnt_off00007812.bin
ee94a93250007d74fa931278b0fa7ca1b003a02a399529c072122d63b6eac8c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7812 10052 bytes

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