Malicious PDF — malware analysis report

Static analysis result for SHA-256 2905cf64d485806c…

MALICIOUS

PDF

64.1 KB Created: 2020-08-19 17:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f1ca2e27218479576b3e5605365d7ac SHA-1: 0dd9c4666d79eabf57c05fdc985abf66c0ba19e1 SHA-256: 2905cf64d485806c6da33196c30bf144ae5455448f61b9a04271d13d703314d7
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external links. One of these links, 'https://ttraff.cc/pify?keyword=android+architecture+components+github+java', is identified as a malicious redirector. The document body appears to be largely obfuscated or corrupted, but the presence of the redirector and the link farm structure strongly suggest a malicious intent, likely to lure users to malicious sites or for SEO manipulation.

Heuristics 3

  • 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.
  • 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=android+architecture+components+github+java
    • http://files.thatpenbloke.com/uploads/1/3/0/9/130969656/pipogilivikaz.pdf
    • http://popolig.stincrowvoden.com/uploads/1/3/1/1/131163658/kosiw.pdf
    • http://rodow.haleymclaughlin.com/uploads/1/3/0/7/130776457/2964233.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/jersey_city_parking_authority.pdf
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/996289449.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/vuguzilepewewenejimimi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3985/7563/files/73512334167.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/wimojusobikatuwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/femuxotetuxomodop.pdf
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/10984605925.pdf
    • https://cdn.shopify.com/s/files/1/0438/2480/8096/files/wuwijizunudekekarekabawut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/street_fighter_4_tier_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/pewubiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/51083231159.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b628.bin
c69484ac97d374ef0c8ceb9a17d568eea9c29102feb09602427e9e9c27b377c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB628 5720 bytes
font_01_sfnt_off0000c96c.bin
7f4fc986d1e7e2b50fc09a385877eea2e69c17d541d3a3029f28f793019eea02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC96C 12996 bytes

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