Malicious PDF — malware analysis report

Static analysis result for SHA-256 d335a7987200bf3e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 16:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2a7fa4d2e4e1e98663a0a245b6334d8 SHA-1: 6f1a3698d82d9967583306166f2e868ebeb404fd SHA-256: d335a7987200bf3e32974d7222f1462b70237ad84e0cb3039cffa8a7590f94af
130 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=mastoidite+tratamento+pediatria+pdf'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malware. The document body, though heavily obfuscated, contains fragments of the malicious URL, reinforcing the attack pattern. No scripts were extracted, but the presence of multiple malicious and unknown URLs points to a likely phishing or malware distribution scheme.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=mastoidite+tratamento+pediatria+pdf
    • http://files.elitesneakz.com/uploads/1/3/1/3/131380612/kigix.pdf
    • http://files.kmbestpractices.com/uploads/1/3/1/4/131437657/9ae2b0.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/irs_pub_523.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/zozejawefa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/mixipiworavebez.pdf
    • https://cdn.shopify.com/s/files/1/0429/5426/0643/files/vonozusapupikisige.pdf
    • https://cdn.shopify.com/s/files/1/0437/2427/5863/files/42274277740.pdf
    • https://cdn.shopify.com/s/files/1/0436/0237/8915/files/rixokiduri.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/13211406023.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/16536455349.pdf
    • https://cdn.shopify.com/s/files/1/0432/9583/4276/files/im_a_celebrity_game_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/3893/9048/files/bedtime_stories_to_read.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e7.bin
9be6f579f55c19f6e42f32423e9531d994d22fe726b2bbde72fb7fe851e5f605
pdf-font-stream PDF embedded font (sfnt) at offset 0x59E7 4948 bytes
font_01_sfnt_off00006a97.bin
9eb1e9e3cb2aead84e99178f70ade069d0f27256583a4106d2060cf859c31ee4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A97 10088 bytes
font_02_sfnt_off00008d1a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1A 4324 bytes