Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6bd29ab2649a5d0…

MALICIOUS

PDF

54.1 KB Created: 2020-08-24 07:16:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 200686fc83dce2dfc8b36143b6bcff3e SHA-1: 860781e9fb3d8ec07557a631e865bda5e43e17fd SHA-256: c6bd29ab2649a5d07e9fb0491a7df6870fa7a13ba0f5255daecd946ab3463449
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to deliver a payload. The document body, though heavily obfuscated, contains the same malicious URL and references to 'akoam games apk', suggesting a lure for malicious downloads. The presence of numerous other PDF links hosted on Shopify domains, as indicated by the PDF_SEO_LINK_FARM heuristic, suggests a link farm used to obscure the true malicious destination.

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=akoam+games+apk
    • http://files.onceuponaneden.org/uploads/1/3/2/7/132712661/fc764e23bc1b85.pdf
    • http://files.cpang-architects.com/uploads/1/3/0/7/130776493/jalenewime_feluxesesix_lokar_dakiziv.pdf
    • http://files.ramblingonbikes.com/uploads/1/3/1/3/131378921/lexalukubojojemasoja.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/33040570730.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/67212338440.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/bose_av3-_2-_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3031/files/activity_book_11.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/zosizixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7543/files/59332974366.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/57276627319.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/solukoranejepew.pdf
    • https://cdn.shopify.com/s/files/1/0432/7391/2488/files/70978324291.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/fugojelekusuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7991/files/snakes_cool_math.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00008eb6.bin
149e0cf17b6eebc6ac1a1d07870df16d3f0635516c888769f4abd99b32314511		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8EB6 25832 bytes
font_00_sfnt_off00005b02.bin
c28cec21bca8178b106cfe326374d7fc09c960822f3b4701f7d9dd765868b289		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B02 4616 bytes
font_01_sfnt_off00006ab8.bin
d10aaf8be8af564f12d25455a803e7aa7b3fa5af097f20f2856c857464379ccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB8 10436 bytes
font_03_sfnt_off0000bbd5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD5 4324 bytes

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