Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee71a8e834d69e8…

MALICIOUS

PDF

48.6 KB Created: 2020-08-01 15:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748574a6ea011fe99d11aaba2eadda33 SHA-1: dd3013b375bcb517a86a076b458ea2ebf5f7c44b SHA-256: 2ee71a8e834d69e8bde5c7b299cf3ed39c050fdeadc2c3919d51a846ee37fc3c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links points to a known malicious redirector. The document body contains garbled text but also includes the URL 'https://ttraff.ru/pify?keyword=latex+font+sizes', which is flagged as malicious. The presence of numerous links, including a malicious redirector, suggests an attempt to lure users to malicious sites or manipulate search engine results.

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.ru/pify?keyword=latex+font+sizes
    • http://files.janinemillerdelany.com/uploads/1/3/2/7/132740270/d44cb5b.pdf
    • http://files.bethbooram.org/uploads/1/3/2/6/132695651/dububesovadewibudeb.pdf
    • http://files.mdsmeats.co.uk/uploads/1/3/1/3/131383665/nuxevilupiju.pdf
    • http://files.evan-hawkins.com/uploads/1/3/1/0/131069863/f3cd707dd4.pdf
    • http://files.athenspassportmagazine.com/uploads/1/3/1/4/131452870/tubud.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/big_girls_don_t_cry_chords.pdf
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/walmart_cashier_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2194/9335/files/tmux_kill_pane.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/28750494896.pdf
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/niwezaguvuzoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8807/5159/files/rololefibepasiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/povojukekarizem.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/furosegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/ferew.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/53426513927.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/wimivusabiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/fupada.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/34063584892.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_off00007576.bin
eebaf5c209826145d81c858ef33d0c18412ddbb011bafb34c8775720db1d7e25
pdf-font-stream PDF embedded font (sfnt) at offset 0x7576 4480 bytes
font_01_sfnt_off000084cd.bin
f3c0db34ea307eda4370944045febc5475dbf476e67d46bed430f53d1cbdddf3
pdf-font-stream PDF embedded font (sfnt) at offset 0x84CD 10148 bytes
font_02_sfnt_off0000a75a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA75A 4324 bytes