Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a5622745f685985…

MALICIOUS

PDF

68.5 KB Created: 2020-07-31 03:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20fb26dd85195ff8fd7c83fbb3541613 SHA-1: 98945c1856caad1c193cdce24a30818dc7cb7620 SHA-256: 0a5622745f68598508ff64b57963a75490b4f48666bc9540b3a627e1c9e1d27d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a "PDF SEO Link Farm". One of the embedded URLs, 'https://ttraff.cc/pify?keyword=ganesh+bhajan+lyrics+pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be a lure related to 'Ganesh bhajan lyrics pdf'.

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=ganesh+bhajan+lyrics+pdf
    • http://files.hrunahestar.com/uploads/1/3/1/6/131607467/foleto_kotifimu_powutuvateju_fowopinovo.pdf
    • http://files.kathrynyancey.com/uploads/1/3/1/4/131409693/wofiwex.pdf
    • http://files.scaretour.co.uk/uploads/1/3/0/7/130739713/7454599.pdf
    • http://files.mindbuild.org/uploads/1/3/0/7/130775921/rarenetesusozafiw.pdf
    • http://files.goodwinscience.com/uploads/1/3/2/6/132682897/jokutuv_piful_wubep_kesulixuvoji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/888429155.pdf
    • https://cdn.shopify.com/s/files/1/0428/0690/2950/files/vuxapomejogixo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/ninogilunuwulisulatuzam.pdf
    • https://cdn.shopify.com/s/files/1/0433/5108/1118/files/55710819206.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/sazezobovolaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/kitoborujosenijizapuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/444847794.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/68253674722.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/3500214761.pdf
    • https://cdn.shopify.com/s/files/1/0432/8128/5286/files/6896277120.pdf
    • https://cdn.shopify.com/s/files/1/0440/6309/6984/files/zebagifolo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/15549558936.pdf
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/36355032094.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_off0000c1b1.bin
fa5c6a8a70e63953398b8ea2296eeb6232fb866b20a440085a2301be98300509		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B1 5192 bytes
font_01_sfnt_off0000d34c.bin
73bb09d1032afbb652b89075b9d72d9f574836442c290c2bf4ebe2f6d6374859		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD34C 16884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.