Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a37d3611785b74…

MALICIOUS

PDF

46.4 KB Created: 2020-10-25 12:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beb63de00605dff58de016e02ff71d73 SHA-1: eeab2a86b4dd43db03da3ec0142fa50b12d18e17 SHA-256: 20a37d3611785b745aaebea7cd004ce81787182282011dd1b1e1de701a950155
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is intended to lure users to malicious infrastructure under the guise of providing instructions. The ML classifier strongly indicates maliciousness.

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://gettraff.ru/pify?keyword=magic+wrap+skirt+instructions+pdf
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f88cf9f1a547.pdf
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f8f860947397.pdf
    • https://cdn-cms.f-static.net/uploads/4375528/normal_5f910d5279219.pdf
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5f9179eae6240.pdf
    • https://cdn-cms.f-static.net/uploads/4370303/normal_5f9202ca870ad.pdf
    • https://jawogebewo.weebly.com/uploads/1/3/4/3/134369376/b197d9609ef25.pdf
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/sipugixeseranelofi.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/terokosil.pdf
    • https://bevokelas.weebly.com/uploads/1/3/4/3/134310014/junotiwapadobo_suvedodanazilam_rijisapuxigawe_patad.pdf
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/5809899.pdf
    • https://fofafobef.weebly.com/uploads/1/3/4/3/134349457/sifeji_pekufolupa_dopipevizov_delivexifaki.pdf
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/6cffac12688d8b0.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/mukobuf.pdf
    • https://wazajodowefode.weebly.com/uploads/1/3/4/0/134017502/gusalewoxina-tegixud-zokilipapuwu-birisalovuvaf.pdf
    • https://vatalinonabalix.weebly.com/uploads/1/3/4/2/134234662/tametububa.pdf
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/134249.pdf
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/c6f90c6d7.pdf
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/rotijorep-webuwe-netad.pdf
    • https://waripeseditalas.weebly.com/uploads/1/3/4/0/134012866/871ba15305.pdf
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/fafutidigadopi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0501/5112/9278/files/scary_teacher_3d_download_apk.pdf
    • https://cdn.shopify.com/s/files/1/0501/0279/6442/files/hecate_and_her_dogs.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000690e.bin
4c05e0632a173b8283dac981b4abb7604c8c2a11dfa454e8dc21ac5103f52de8
pdf-font-stream PDF embedded font (sfnt) at offset 0x690E 5216 bytes
font_01_sfnt_off00007ae9.bin
caa2707b53e64592d92e5d44201b726dd84040e66562ddd64c8956a4203a529e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 10672 bytes
font_02_sfnt_off00009dd2.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD2 4324 bytes