Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e646a145acff225…

MALICIOUS

PDF

42.8 KB Created: 2020-09-16 21:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0094b7ec3f39a25b46b768733de10bf5 SHA-1: 177031b21f1aeb1ad21cdd7b0061bd4a160780c9 SHA-256: 8e646a145acff22578ddae2bb3d9196d241accac9fb8816836e8c89d8bd9f04f
150 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to downloading software ('drastic ds emulator apk free download for android') and the malicious URL. This suggests the document's primary purpose is to redirect users to potentially harmful content, likely for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.club/wix?keyword=drastic+ds+emulator+apk+free+download+for+android
    • http://files.jessicacomeaudulcimer.com/uploads/1/3/1/4/131453904/nefesebavafamo_gomigu_gibokewinex_tunapura.pdf
    • http://files.novellychic.com/uploads/1/3/2/6/132695405/1b7055.pdf
    • http://files.hce-players.org/uploads/1/3/0/7/130776592/dowixasudafamipon.pdf
    • http://files.eficusenergy.com/uploads/1/3/1/3/131398143/309f2442f0.pdf
    • http://piluf.nggabooster.org/uploads/1/3/1/4/131438847/bodefu.pdf
    • https://0c005061-34c5-455b-8ef0-e76b8fa017cc.filesusr.com/ugd/3f80ec_2dd5bc4a5f5049c78e41833b3c5272b9.pdf?index=true
    • https://9a79c829-9a29-4148-9048-44ad29b5cee5.filesusr.com/ugd/314c35_89cdd9025f2c463e8fc8b0b666881177.pdf?index=true
    • https://848d01a7-9299-4723-bbbc-7c5b08bc5005.filesusr.com/ugd/3f2390_0c2424440bf34c2a8fd4bc5f9a9c4d2f.pdf?index=true
    • https://6d859ebb-a286-4321-a784-1ffe78b7f1fe.filesusr.com/ugd/eb6c48_d14dc8dfe94b4e518e2814ef7eae498a.pdf?index=true
    • https://7aa01d7c-7002-44fc-b4fe-2aee3bb5d38d.filesusr.com/ugd/04e6f9_c3fd0f73a2ea4499886edd22fd3dab48.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/pevopetiribuxodakuvarod.pdf
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/angamaly_diaries_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0434/5646/3001/files/1942304204.pdf
    • https://cdn.shopify.com/s/files/1/0435/8474/9729/files/91286196433.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/92907408730.pdf
    • https://cdn.shopify.com/s/files/1/0478/1454/1471/files/piminufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/85017759559.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_off00006927.bin
039cab5bef76ea5271fe128e6002a678eb9609aead532de783f23fdd9b083920
pdf-font-stream PDF embedded font (sfnt) at offset 0x6927 5456 bytes
font_01_sfnt_off00007bb6.bin
b19649b225322dbae45bb726f89bb878bfd346bd0a6f34d68d572769f5073bcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB6 10160 bytes