Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa6ee324f5ceff9…

MALICIOUS

PDF

54.4 KB Created: 2020-07-31 13:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35a56a2ded0577d2b3708bde8e479203 SHA-1: 1ea116368cc170aa76274ff8cc99b8b3529982bf SHA-256: 8fa6ee324f5ceff9c37ed718790f514ac14dbadb460188bfd685e4a451b0d2cb
152 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF SEO link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious URL identified is ttraff.ru, which is likely used to redirect users to a phishing or malware-hosting site. No scripts were extracted, but the presence of multiple malicious links suggests a delivery mechanism for 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.ru/pify?keyword=contoh+karya+tulis+ilmiah+tentang+bahaya+merokok+pdf
    • http://files.newhampshirewoodworks.com/uploads/1/3/1/4/131438151/282674364798c.pdf
    • http://files.doitallpressionals.com/uploads/1/3/1/3/131382673/bedugob.pdf
    • http://files.charlestonvillagehall.co.uk/uploads/1/3/2/3/132303024/doxubikadanunit.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0983/files/66055951808.pdf
    • https://cdn.shopify.com/s/files/1/0434/7160/1817/files/zamevawisitenadetawupam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/48371804668.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/videxetisusajipot.pdf
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/xevililogowunines.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/89929184112.pdf
    • https://cdn.shopify.com/s/files/1/0440/6204/8421/files/78402762498.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/58915388920.pdf
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/wagugopiridosawodeleniv.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/6455299372.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/75234529833.pdf
    • https://cdn.shopify.com/s/files/1/0430/5564/4823/files/govitisuker.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/fulugepiganasitotuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/zodadowisokusemu.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000095a0.bin
6cf38e565d9bd4e2d64efb49c1672764479b796e3342e57afe169ffdb4d0197d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A0 5668 bytes
font_01_sfnt_off0000a8b9.bin
804a17324f434e072a35794a924541cfd7a7fd2253aaad654f51e1b449fd2622		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B9 10212 bytes

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