Malicious PDF — malware analysis report

Static analysis result for SHA-256 d842b3f03992e83c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 03:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbb780f113ee0796e0c9045334690e2e SHA-1: 5a566dcdf3c04e10d40f41cf9bf86c46404c6a48 SHA-256: d842b3f03992e83cd322c87fcdafde04d8ac6b5b265e90909a75637fd9ae612d
150 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=present+value+annuity+table+pdf'. The document body, though partially corrupted, appears to be a lure related to financial tables, suggesting a phishing or malware distribution attempt. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=present+value+annuity+table+pdf
    • http://files.nattycordonkayaking.com/uploads/1/3/0/9/130969801/3816610.pdf
    • http://files.victoriousestatejewelry.com/uploads/1/3/2/6/132695339/pafawopitog_suxun_jupusa_biliwidinizuzes.pdf
    • http://files.shearluxesalon.com/uploads/1/3/2/7/132712306/sunevoxed_wiritoruzibom.pdf
    • http://pavefivik.momentcapture.net/uploads/1/3/2/6/132695306/ninalarojeporo_sowavopumukaka.pdf
    • http://files.du.dematic-university.com/uploads/1/3/0/7/130776619/fujejim.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/97324313253.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/60154575181.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/34746290751.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/kuxotowiviwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/42579239911.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/4586746441.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2503/files/xafewudenorizuvisijemalo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/vagoduzotopewosipejopude.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/68797903293.pdf
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/jakavawun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.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_off000061e9.bin
f3df6dc3ff6e3181bbbd46b47b08cc66c36463ce176fe72e374e1293aa080f37
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 5340 bytes
font_01_sfnt_off00007426.bin
0b84f36f527ad84a609af0e9ecd2a87c4ea10ebcfb22309f04e8cb9e434d9fe9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 10532 bytes