Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff9a6347207b9f7…

MALICIOUS

PDF

41.5 KB Created: 2020-08-11 16:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 754fd4d4acf97e7d652d63008fb73502 SHA-1: bf5375cbe712db97e92f5229b9fc5d00b86b7a36 SHA-256: aff9a6347207b9f71d1b832e5b9769676960be97dc5403611ac6a403c468b7dc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). The document body text, though partially corrupted, includes the phrase 'A frame house plans free pdf' and a URL that appears to be the same as the redirector's target. This suggests a social engineering lure to trick users into clicking malicious links, likely leading to further malware or phishing content. The presence of numerous SEO-like links further indicates an attempt to obfuscate the malicious destination.

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=a+frame+house+plans+free+pdf
    • http://files.greatwhytesurfboards.com/uploads/1/3/2/8/132815002/zaxanidefadop-jemivibuxira-suzuzativu-pirem.pdf
    • http://files.onecarecdl.com/uploads/1/3/1/6/131606864/zuwotivero_lalikedu_roviliwudipoza_faxowesod.pdf
    • http://rajesun.oldetownesalisburymd.com/uploads/1/3/1/6/131606349/7032687.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/37019777522.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/88141429017.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/82650004784.pdf
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/dungeon_world_fronts.pdf
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/wudidezadideku.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/41350513906.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/kukirasevidemozos.pdf
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/97229612674.pdf
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/28433551585.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/3gp_bollywood_movies.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/kappa_alpha_psi_rituals.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/exothermic_and_endothermic_reactions_examples.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_off00006336.bin
b96e0965eada2389e4dca76dfd8860c6071a2e21b66ff3018ced446af6d148a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6336 5268 bytes
font_01_sfnt_off000074f7.bin
f14901b3738b1ef90eace9ad0f84c7c89e2366b9e558abb58e4f0be54aa0de51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F7 10736 bytes

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