Malicious PDF — malware analysis report

Static analysis result for SHA-256 f062758295360196…

MALICIOUS

PDF

50.2 KB Created: 2020-08-05 00:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08ae9d38a057670443fd4e00c62ed760 SHA-1: c574f4bc66a9c698ba06855d9bc9188a55390d73 SHA-256: f0627582953601960758e472c5953db525a724243755b6ff928d512596da8119
152 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure via 'https://ttraff.com/pify?keyword=bleep+test+adalah+pdf'. The document also exhibits characteristics of a link farm, with many URLs pointing to Shopify-hosted PDFs, likely to obscure the malicious redirector or for SEO manipulation. The ML classifier strongly supports the malicious verdict.

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=bleep+test+adalah+pdf
    • http://files.whitepeacockcoffee.com/uploads/1/3/1/4/131436971/7dad80.pdf
    • http://files.drliannebrown.com/uploads/1/3/1/4/131455158/3287115.pdf
    • http://files.falinzhang.com/uploads/1/3/0/7/130776016/dovupup_moxupumedu_giratarasaz_fujaj.pdf
    • http://files.inusagiroleplay-swrp.net/uploads/1/3/1/0/131070722/pevexosi.pdf
    • http://files.animalscalledtoservice.org/uploads/1/3/0/8/130813934/foxewobibutumiroxuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/4735/2480/files/dawim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0648/3876/files/73449616305.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/maxomotowekumeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/5770676008.pdf
    • https://cdn.shopify.com/s/files/1/0437/1821/3797/files/fataxesakivawuwojimuwobim.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/36064053258.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/3860199989.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/legidixeda.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/bubebekawememu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/sublime_text_project.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/47392750891.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_off00008803.bin
974902fdfd081d666715dae354ef5a1711d7457a9b1fe340fd2dc3a4350ee78c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8803 5080 bytes
font_01_sfnt_off0000994f.bin
5cc13a381b8b98d1aac3256d4be837a73cb36f4fe7409b0255d20d7ac2e87ad9
pdf-font-stream PDF embedded font (sfnt) at offset 0x994F 10256 bytes