Malicious PDF — malware analysis report

Static analysis result for SHA-256 119068662227099e…

MALICIOUS

PDF

33.6 KB Created: 2020-08-17 05:17:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12c7e685b01f5125ffd6d81eaab705a7 SHA-1: a50b5c6d07cd724283076fa6a0884902edf25312 SHA-256: 119068662227099e6b4079eee57fd27937bbed7adfd04495cab5576b563e3066
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 of these links, 'https://ttraff.com/pify?keyword=oh+beimaan+piya+gaan', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=oh+beimaan+piya+gaan
    • http://files.deborahlustig.com/uploads/1/3/2/7/132741334/3053309.pdf
    • http://files.exaltandsalute.com/uploads/1/3/1/8/131857315/192452.pdf
    • http://files.khoohuiling-piano.com/uploads/1/3/0/8/130814043/sugizapuf-xuritudilute-ketazu-xijoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/62144015185.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/puzifofufufuroteleta.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/99965681960.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/17176141981.pdf
    • https://cdn.shopify.com/s/files/1/0447/4352/4501/files/gedanijajutejeter.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/vuxasu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/some_applications_of_trigonometry_class_10_ncert_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0177/files/87781062239.pdf
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/3089579968.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/wumamafovulurodirojuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/9132/0214/files/nicki_minaj_the_pink_print_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/stirred_tank_bioreactor.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004633.bin
049c9238325804a4d11d2ec11fb6e90f1410770b0f73bfaaf82bb7a4053790c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4633 5196 bytes
font_01_sfnt_off000057c2.bin
8c0b95859d0dc9eee3093936f01057a9214e6a71448f11b5dbd3d0c1818f4929
pdf-font-stream PDF embedded font (sfnt) at offset 0x57C2 10064 bytes