Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba4ee46ad2ba6e5…

MALICIOUS

PDF

54.3 KB Created: 2020-08-10 04:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bbd8629be53d8bc3a0b39c002b6c350 SHA-1: e5d40e97f09db989c55fb0437eeeba54a12e9914 SHA-256: eba4ee46ad2ba6e568ef44653cae481f36f18b05ef72ccb29691de71a3c19346
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body contains a lure related to 'freeletics bodyweight workout plan pdf' and urgency language, intended to entice users to click the malicious link.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=freeletics+bodyweight+workout+plan+pdf
    • http://files.foresideandalusianstud.com/uploads/1/3/0/9/130969740/4120769.pdf
    • http://files.roundthesound.com/uploads/1/3/0/8/130813841/gorenim_piwexu_marudofimelo.pdf
    • http://files.maddybradleycollection.com/uploads/1/3/2/6/132695372/konujewarajelojijuwu.pdf
    • http://dozopafo.bandbbasketballacademy.com/uploads/1/3/2/8/132816036/4255212.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/15742229393.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/99160205364.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/introductory_chemical_engineering_thermodynamics_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/96173967174.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/58638968113.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/89353274959.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/womeragorerifepik.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/comment_apprendre_l_anglais_tout_seul.pdf
    • https://cdn.shopify.com/s/files/1/0440/7879/2869/files/neruburega.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/rakipolititajuneratoraj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/social_avoidance_and_distress_scale.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/fexikomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/tuwuzotowubove.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2556/files/guxeromuzad.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fca.bin
bf8157105c2bff8ec9cbd3a6d38076347273af08ac3be4d588d87a2a2c70b5c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCA 5652 bytes
font_01_sfnt_off0000830a.bin
a6a801dbca58de9e10ceefd1cc3529dd34423467cb4ff5c274901606a8d247e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x830A 10440 bytes
font_02_sfnt_off0000a6f7.bin
8e086807d7a0f390fc8ad91bc5aad4d64acdd5c37d927986437105bd588a559f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F7 16648 bytes
font_03_sfnt_off0000bd4d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4D 4324 bytes

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