Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcb45356b477323a…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 11:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90b9c207587be64939854c06912d3121 SHA-1: d63dbb2865ea15694433fdbaa2f9581a2bf14eb4 SHA-256: fcb45356b477323afb30d7f606568b0bad808551fd6f20c7b09ec25a4db413c4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=tutorial+in+introductory+physics+pdf'. Additionally, it features a PDF link farm heuristic, indicating a large number of embedded links, with the first being 'https://cdn.shopify.com/s/files/1/0431/2009/9488/files/ford_1720_manual.pdf'. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, reinforcing the lure. No scripts were extracted, but the presence of malicious links suggests a phishing or redirection attack.

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=tutorial+in+introductory+physics+pdf
    • http://xojel.menomoniesaddleclub.org/uploads/1/3/1/4/131438759/c8e49bf10b0a3.pdf
    • http://files.indianabln.org/uploads/1/3/0/9/130969304/989691.pdf
    • http://files.digitalmediaforlearning.org/uploads/1/3/1/4/131406173/rebokurudujulasif.pdf
    • http://files.florencefoplodge210.com/uploads/1/3/0/7/130739783/7168389.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/ford_1720_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/47268150470.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/gikik.pdf
    • https://cdn.shopify.com/s/files/1/0434/1891/0870/files/37745248854.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/18190714782.pdf
    • https://cdn.shopify.com/s/files/1/0431/5919/1712/files/51672797393.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/12675761448.pdf
    • https://cdn.shopify.com/s/files/1/0431/4093/9933/files/21970029662.pdf
    • https://cdn.shopify.com/s/files/1/0432/5366/1864/files/nosilatibugujago.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/hunter_bis_classic_wow.pdf
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/3806983894.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/98501701237.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/45846531661.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/best_gameboy_advance_emulator.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006480.bin
3151f228a07f91212ed77371fa5ac14113a078314fd9deba68f2b533f850374e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6480 5296 bytes
font_01_sfnt_off00007684.bin
dbb4d7055fbdba4aeaad7f3e374281385d52c7fda823471ab73d314247646622
pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 12324 bytes