Malicious PDF — malware analysis report

Static analysis result for SHA-256 255bab983ec68abf…

MALICIOUS

PDF

49.5 KB Created: 2020-07-17 18:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 904436216594ade0774380a6322950dc SHA-1: aff5449c0b260444301ab8c5049abbf0a82e7bb7 SHA-256: 255bab983ec68abf14062603b4c4d13eea408331942c14ca967296bca9722754
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to traff.com. Additionally, another critical heuristic detected a link farm containing numerous external PDF links, with many hosted on cdn.shopify.com. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of these link farms strongly suggests an attempt to drive traffic to malicious sites. No scripts were extracted from this sample.

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.com/wb?keyword=ipega%20pg-9023%20manual%20pdf
    • http://files.edargenziano.com/uploads/1/3/1/4/131453451/zomonisiwugijow.pdf
    • http://files.brphotography100.com/uploads/1/3/1/4/131437508/556357.pdf
    • http://files.sidleystandup.com/uploads/1/3/0/7/130775942/3089407.pdf
    • http://files.cbysintranet.com/uploads/1/3/1/4/131454492/laboborav.pdf
    • http://files.bambooartscenter.com/uploads/1/3/1/8/131857071/pujeriwetid-napofemerumaw.pdf
    • http://files.cbysintranet.com/u
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/68774891991.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/26237796149.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/62723733382.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/18026361296.pdf
    • https://bopojidu.files.wordpress.com/2020/07/13908597284.pdf
    • https://rovizemafogi.files.wordpress.com/2020/06/94773369271.pdf
    • https://kozaxijewob.files.wordpress.com/2020/07/14015863753.pdf
    • https://zawonaj.files.wordpress.com/2020/06/60972892613.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/89057679587.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/xuzunuwomepixusepoxubego.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/jopokepufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/86465992911.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/2238511756.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/40193469796.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/megit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/tugisemoruzefekojovovuwu.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_off00008318.bin
8084eb3a9498f749c3a8b8fbac582a1ec73dc63b1d7965a1e04b9189c5643fbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x8318 5296 bytes
font_01_sfnt_off00009502.bin
a0d4c3f2d11d7b5e7980d0fc9f17b3447bc8b4b11a1f9f7bf0e7c1a0a222c093
pdf-font-stream PDF embedded font (sfnt) at offset 0x9502 10276 bytes