Malicious PDF — malware analysis report

Static analysis result for SHA-256 f166c4e27aac6de1…

MALICIOUS

PDF

47.2 KB Created: 2020-08-25 11:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3464cd6f338919699b880820269d5d2 SHA-1: 0d73684f1abbb703ab29dc484b524807068eb505 SHA-256: f166c4e27aac6de1296abd1409a3af84ae2a605a85f912f8f3fcc347243f2583
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'Talking Angela 2019 apk' and a URL that appears to be a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=talking+angela+2019+apk, which likely serves as a gateway to further malicious content. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning attempt.

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.cc/pify?keyword=talking+angela+2019+apk
    • http://gapitij.thechannelislandgirl.com/uploads/1/3/0/7/130776078/c2ead4fe1e.pdf
    • http://files.diedhardlaughing.com/uploads/1/3/2/6/132696465/lozofozutezig_bukewoj_futojivodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.pdf
    • https://cdn.shopify.com/s/files/1/0440/9671/6952/files/namenakebukobolaxizekame.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/outlook_2013_agenda_synchroniseren_met_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1801/files/madejigafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7565/7121/files/jameson_milliner_noles.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/kivikunelafukodagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rimudunibodosugesujusuvud.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/mepiterijomoborifudabe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3810/6023/files/anecdotal_reading_records_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/bse_bovine_spongiform_encephalopathy.pdf
    • https://cdn.shopify.com/s/files/1/0433/6582/6719/files/61672325342.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/felamisakawubibaxejurelok.pdf
    • https://cdn.shopify.com/s/files/1/0432/0631/2098/files/javascript_divisible_by_3_and_5.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_off00005c19.bin
5510861e0701cb7f7f57c1c4f6c9cfe19f8a483cefdede93edc0bf9cc0aea221		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C19 3080 bytes
font_01_sfnt_off00006721.bin
94d0175b5a57783f146a0b4014a80245ce7a8a120c72632799e035d853fe8d4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 5208 bytes
font_02_sfnt_off000078ef.bin
39a7bd879961ed6b0dab25b7f7944d7e710166476c8668a2ded56fb60985356d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 3204 bytes
font_03_sfnt_off0000862f.bin
9e3df95394b081d4faa2f171cb8296cdb8e6c175c3497ba0671d1537a41bfa33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x862F 14676 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.