Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e09eb29e59ddabe…

MALICIOUS

PDF

52.5 KB Created: 2020-08-14 12:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5ca15934330a2d2c843e36fd7a243d9 SHA-1: 643a509aad5065ecda2ddb071899280137b1f11e SHA-256: 5e09eb29e59ddabe5f56ac2a5d462fd8f842905e6a89d09f38bdc4d738d08b05
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded links, many of which point to external PDF files hosted on Shopify and other domains, forming a link farm. One prominent link, https://ttraff.com/pify?keyword=green+screen+video++mp4+free, is identified as a malicious redirector. The document's content appears to be a lure, using search terms for free video content to entice users to click on these links, likely leading to further malicious activity or malware downloads.

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=green+screen+video++mp4+free
    • http://files.cassandrakgolden.com/uploads/1/3/2/8/132815882/2808986.pdf
    • http://files.dunnvilleminorfastball.com/uploads/1/3/2/8/132814306/zewawazumivo.pdf
    • http://files.mbilder.com/uploads/1/3/1/4/131406816/1092288.pdf
    • http://files.farsouthcoasthominoidevidence.org/uploads/1/3/1/4/131409508/tavanaxava.pdf
    • http://rosuzifu.johnsonwriter.com/uploads/1/3/0/9/130969754/f1d45462.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9372/8159/files/nuviviripinivutojef.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/838053688.pdf
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/dragon_ball_af_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/xobovupuxadaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/14122992867.pdf
    • https://cdn.shopify.com/s/files/1/0446/7530/1539/files/gotawogobodovame.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/sofel.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/tamil_worship_songs_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/cellulose_aerogel.pdf
    • https://cdn.shopify.com/s/files/1/0433/7195/4334/files/64599137464.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/add_unlike_fractions.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00007966.bin
4092b3820c2eaa2fa2fa7e94a8d12cfc3e640dcafb5bc7464e42900a3a4fad49		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7966 12060 bytes
font_00_sfnt_off000067a1.bin
ea3fec859114fcc71e93647137916666c0994282ca285103f29a898402174a8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 5236 bytes
font_02_sfnt_off00009ba3.bin
f01ac2e2820a9ec08139ee024a74113d02298ffeb0eaa7a0489c38b38f27838d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA3 13276 bytes

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