Malicious PDF — malware analysis report

Static analysis result for SHA-256 918c19c3d5039fcc…

MALICIOUS

PDF

49.6 KB Created: 2020-09-17 16:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6074df1c7ce75c360da26a02c9fb5c3b SHA-1: 40f9b254d3a42e96a49e8b776cad8777485eb90a SHA-256: 918c19c3d5039fcca195a170052b4672d016fa4d526365aef4cc8b96588ce859
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One prominent link, 'https://ttraff.club/wix?keyword=drastic+3ds+emulator+apk+download+for+android', suggests a lure for downloading Android emulator APKs, which are often associated with malware distribution. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that this URL leads to known malicious redirector infrastructure. The presence of a large number of external PDF links further supports the classification as a link farm, designed to drive traffic to potentially harmful sites.

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+3ds+emulator+apk+download+for+android
    • http://files.charlottebiltekoff.com/uploads/1/3/2/7/132741241/gutokovevitemoj_loxakazoxe_toxavakulegezot_xopijokuxesubo.pdf
    • http://files.glasloughtidytowns.com/uploads/1/3/2/8/132815767/subaxe.pdf
    • http://lavoji.actoncommunitychorus.org/uploads/1/3/1/8/131857284/b4a4599a.pdf
    • http://files.washingtonactivities.com/uploads/1/3/0/9/130969206/8540930.pdf
    • https://97f515b7-c04e-441e-8bba-37eae029ea0b.filesusr.com/ugd/54fa57_fe2a3e547e5b4108972ccf652bebc6ea.pdf?index=true
    • https://0e39e608-e431-4884-abba-20eaa9dc1f25.filesusr.com/ugd/c6ac46_693cc0ee36924da3b66e974ea1cffb6c.pdf?index=true
    • https://a42be952-8187-4f9f-a494-45e433d963d2.filesusr.com/ugd/ecd213_3885c3634d3847049d78ca924629983c.pdf?index=true
    • https://ea5d09d0-9a21-4858-9cbf-78b29c8eaa9b.filesusr.com/ugd/3e7897_1732770bf0594edcb26ade0ead37cd3b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/3540/1112/files/73163471345.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6967/files/56243699222.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/makukot.pdf
    • https://cdn.shopify.com/s/files/1/0465/4294/6454/files/arpeggio_scale.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0101/files/agnathavasi_movie_video_songs_telugu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b11.bin
068e3cf7cf97339f6b4184723e48f37df854b63ec767e593b8fbb252f68ba86e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 5620 bytes
font_01_sfnt_off00007e35.bin
465a3c49ea179500b3ab9d39171ed797f97653eed8202a1acac1d40007c943cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 10512 bytes
font_02_sfnt_off0000a273.bin
7348a63ea9206f1dd9d85ac5b8e77a4d6d13d552d707fc8209e912c0db264539
pdf-font-stream PDF embedded font (sfnt) at offset 0xA273 16076 bytes