Malicious PDF — malware analysis report

Static analysis result for SHA-256 a922b68112676bae…

MALICIOUS

PDF

51.5 KB Created: 2020-08-06 22:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2dfe2a005c1bc377571763b8219a59d SHA-1: 631079e238380dac98fdd0120a2e8966f4aa2626 SHA-256: a922b68112676bae341db6a4697357ea519f38b42a18b15b7b51110ed07d69b3
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for the 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=surah+ar+rahman+in+english+text+pdf
    • http://files.plumb-bing.co.nz/uploads/1/3/1/3/131398504/tajusirifexepiwinojo.pdf
    • http://files.emmareavesphotography.com/uploads/1/3/2/7/132740435/5930381.pdf
    • http://files.benipomskies.com/uploads/1/3/0/7/130739340/7378960.pdf
    • http://files.thedumplinglady.com/uploads/1/3/2/7/132740905/noxikosokakufanaxeti.pdf
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/rimanuw.pdf
    • https://cdn.shopify.com/s/files/1/0441/2866/5752/files/free_peyote_beading_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/54344439951.pdf
    • https://cdn.shopify.com/s/files/1/0438/5275/9200/files/gatogudimarerevekorox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/92878944316.pdf
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/sokawidiparogofilif.pdf
    • https://cdn.shopify.com/s/files/1/0438/4214/2358/files/berliner_platz_1_testheft.pdf
    • https://cdn.shopify.com/s/files/1/0448/5762/2689/files/php_show_latest_image_in_dir.pdf
    • https://cdn.shopify.com/s/files/1/0429/8765/1235/files/648624371.pdf
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/creative_chordal_harmony.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/42268334499.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_off00007315.bin
38ea96072450b7cb564d90f41c46b13326c9b7b04614418cf368266142bf3f76
pdf-font-stream PDF embedded font (sfnt) at offset 0x7315 5624 bytes
font_01_sfnt_off0000860e.bin
587158fba80fc89515da59833190fd441c3cc86e1d2e6f2735f4474301141992
pdf-font-stream PDF embedded font (sfnt) at offset 0x860E 10388 bytes
font_02_sfnt_off0000a99b.bin
d3fd699ae8a37b9292a71da3618d167b19b66a9d115283fe0569914cf3c464c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA99B 16648 bytes