Malicious PDF — malware analysis report

Static analysis result for SHA-256 b187dd1641e2ff59…

MALICIOUS

PDF

65.4 KB Created: 2020-08-25 04:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d913a861312a6c84df2cad740e3a99d SHA-1: bd09cae1be1cc76688851ec320db5e5fe183bf08 SHA-256: b187dd1641e2ff59db9c94710e2a02070ba1ede2ab8526fa4283f783837c32ab
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=classifying+and+balancing+chemical+reactions+answers'. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=classifying+and+balancing+chemical+reactions+answers
    • http://woradabo.minesphotography.com/uploads/1/3/0/7/130775507/bosire.pdf
    • http://files.aerialrootsstudio.net/uploads/1/3/1/3/131379014/1966838.pdf
    • http://files.benjhomes.com/uploads/1/3/1/4/131438570/2073772.pdf
    • http://files.houseofangelcardreadings.com/uploads/1/3/0/7/130740062/marejogelokezaxikaf.pdf
    • http://sezilejo.howardbands.com/uploads/1/3/0/7/130739590/b761916ab4cc3.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/pexazufowapomodunotulo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9414/6200/files/59495117152.pdf
    • https://cdn.shopify.com/s/files/1/0430/0950/7487/files/bunosipulewubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/pink_floyd_coming_back_to_life_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2813/files/baseball_star_mod_apk_latest_version_2019.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/copernican_revolution_kuhn.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5316/files/jegefovajijokokegujaxaxen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/valetuduruwadubisozakimip.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/the_intouchables_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/19185623465.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/71158484227.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_off0000a51b.bin
802f694eba54a38bfa5cc730b628f9ae87eff6390bfda2c5ec5a2d09c812614e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA51B 5676 bytes
font_01_sfnt_off0000b84f.bin
ea6c6740d554d2914da76929902b077889b0794691d0b51f60b977c19e8cbb9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB84F 10572 bytes
font_02_sfnt_off0000dc88.bin
3f5018a9ac16911ce90a759053b5608d327042b9d80db68aea39418a7b11fd6e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC88 18008 bytes