Malicious PDF — malware analysis report

Static analysis result for SHA-256 465fbf622775d263…

MALICIOUS

PDF

48.3 KB Created: 2020-08-08 00:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d146c301d9c583d0173bb633c7cf4e10 SHA-1: 47c48db762f04a0bb1917a072a9943a39a39c4c6 SHA-256: 465fbf622775d263765d7b482691228989f01c3af60ac979e026099fb5f49f24
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=bosques+secos+tropicales+en+colombia+pdf'. This suggests the document's primary purpose is to lure users to malicious infrastructure, likely for further exploitation or malware delivery.

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=bosques+secos+tropicales+en+colombia+pdf
    • http://files.globaleducationmove.com/uploads/1/3/1/8/131871874/juvagumowos_warekojapep.pdf
    • http://files.beautyessencebymerabell.com/uploads/1/3/2/6/132695525/penagikivajixijolej.pdf
    • http://files.bikiniusa.com/uploads/1/3/1/4/131453215/8557353.pdf
    • http://files.thequeenofstaves.com/uploads/1/3/0/7/130739375/sesemekironug.pdf
    • https://cdn.shopify.com/s/files/1/0435/1361/0392/files/xivitizosur.pdf
    • https://cdn.shopify.com/s/files/1/0434/9997/8904/files/juvegogutexumafoleselefe.pdf
    • https://cdn.shopify.com/s/files/1/0438/1864/7709/files/28951709987.pdf
    • https://cdn.shopify.com/s/files/1/0432/3855/5805/files/3874062293.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/51182610388.pdf
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/npv_irr_arr_payback_period.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/patofisiologi_cacar_air.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/fancy_nancy_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2918/files/nufap.pdf
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/gepiverevotomagaleg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/64195251110.pdf
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/ruwelekefugujebelidelokej.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b7b.bin
6c6f8d189e009347e44ac82d90c92d078b707301417ae4eead9673e64be2f80a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7B 5616 bytes
font_01_sfnt_off00008e77.bin
0048bd031a1ba75db8a6a5496a8b536abf8fc68e794eeb6cb51fe02071e47bbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E77 11040 bytes