Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7539068e0bf4e4…

MALICIOUS

PDF

39.5 KB Created: 2020-08-26 00:58:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ce8cc8a6a5bef9ab533b169644721b SHA-1: e3be8d3c49359bf7f1ddbeda51f83a77eb472a72 SHA-256: 1c7539068e0bf4e41683070e6700294ae4daa916ef4c038ee2c7b557ed1b8515
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Call of Duty 4 serial number mac' and includes the malicious URL. This suggests a phishing or scam attempt to lure users to a malicious site. The presence of a link farm heuristic further supports the malicious intent.

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/pify?keyword=call+of+duty+4+serial+number+mac
    • http://files.27andoak.com/uploads/1/3/1/1/131163914/7027796.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/86929044764.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/76976575121.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/gipakupefen.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/51705521620.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/58768074205.pdf
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/araby_warhammer.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/basketball_tryout_evaluation_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/wewazuboto.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/c._p._t_exam_form_last_date.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0959/files/2008_audi_a4_reliability_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/world_s_hardest_word_search_dog_answer.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/65183393072.pdf
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/free_email_notifications_sounds.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/kiwomigunowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.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_off00005c2f.bin
573d01b2ec4dc92e538d989836d5ddd97e4504ac8049825caceadeb6ed4afd60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2F 5404 bytes
font_01_sfnt_off00006e84.bin
41da221adaa0cc65522de07fdcbea4c9cb4b67938d44983692c4b7482d97d143		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E84 10280 bytes

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