Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e899fb6f240c16…

MALICIOUS

PDF

51.3 KB Created: 2020-08-07 19:16:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7f22272f00a1a6612c47079a82def8b SHA-1: f4e89a3cd87b2bfadd239ba8d654673aab4446da SHA-256: 57e899fb6f240c1679251131ebdd8be30928681b074fba9c5f46ae6604d4b81c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to this redirector. The primary purpose appears to be directing users to malicious infrastructure, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=el+par+biomagnetico+isaac+goiz+pdf
    • http://files.cyclingadventures.net/uploads/1/3/2/6/132695689/sulexovabub_bubizelogu_mekodovi_pinuvawenun.pdf
    • http://files.katrina-wilhelm.com/uploads/1/3/1/4/131453247/tuperobejipenowanim.pdf
    • http://files.armisteadfarms.com/uploads/1/3/1/8/131856723/a4d8f5.pdf
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/tidewitorewiluto.pdf
    • https://cdn.shopify.com/s/files/1/0431/4044/8407/files/ginogajufob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/hedging_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/rawez.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/bipapi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/ninipomotonegij.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6650/files/ayurveda_books_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/kamau_brathwaite_the_arrivants.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/sufepiwopopek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/14849618235.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
    • https://cdn.shopify.com/s/files/1/0431/5421/0980/files/78904187195.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/wagepox.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_off00006bda.bin
2f13048c7c8dd6b67a7955ab7633beba57074c6e7c68f51719cfbf2c458671f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDA 5412 bytes
font_01_sfnt_off00007e21.bin
81c49b34c5e4c7355fa484759d52d234450edbfd10fbdadcd2598cb7a5693cec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E21 16528 bytes
font_02_sfnt_off0000b094.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB094 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.